The journal Arquivos de Gastroenterologia (Archives of Gastroenterology), founded in 1964 by Prof. Dr. José Fernando Pontes, is a quarterly journal. The institution directly responsible for the periodical is the Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades – IBEPEGE (Brazilian Institute for Studies and Research in Gastroenterology and Other Specialities). It is the Official Publication of the:

• Colégio Brasileiro de Cirurgia Digestiva – CBCD (Brazilian College of Digestive Surgery)
• Sociedade Brasileira de Motilidade Digestiva e Neurogastroenterologia– SBMDN (Brazilian Digestive Motility & Neurogastroenterology Society)
• Federação Brasileira de Gastroenterologia – FBG (Brazilian Federation of Gastroenterology)
• Sociedade Brasileira de Endoscopia Digestiva – SOBED (Brazilian Society of Digestive Endoscopy)
• Sociedade Brasileira de Hepatologia – SBH (Brazilian Society of Hepatology)
• Sociedade Brasileira de Nutrição Parenteral e Enteral – SBNPE (Brazilian Society of Parenteral and Enteral Nutrition)
• Associação Brasileira de Disfagia – ABD (Brazilian Dysphagia Association)
• Grupo de Estudos da Doença Inflamatória Intestinal do Brasil – GEDIIB (Brazilian Intestinal Inflammatory Disease Study Group)

Committed to the ideal of stimulating scientific production and valuing medical literature, the journal is intended to publish unpublished scientific papers by Brazilian and foreign researchers.

The abbreviated title of the journal is Arq Gastroenterol, which should be used in bibliographies, footnotes and bibliographical references as well as in strips.

• PubMed (MEDLINE)
• Scimago
• Literatura Latino-Americano e do Caribe em Ciências da Saúde (LILACS)
• Scopus
• Qualis/Capes – Classified as an International Circulation Journal in Medicine

All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY-NC.

The publication is financed by:

• Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades – IBEPEGE.

Founding editor

• José Fernandes Pontes (Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE, São Paulo, SP, Brasil)

Scientific editor

• Mounib Tacla (Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE, São Paulo, SP, Brasil)

Editor in chief

• Ricardo Guilherme Viebig (Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE, São Paulo, SP, Brasil)

Consulting editors

• Fernando Pardini (Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE, São Paulo, SP, Brasil)
• Osvaldo Malafaia (Colégio Brasileiro de Cirurgia Digestiva - CBCD. Universidade Federal do Paraná, Curitiba, PR, Brasil)
• Marcellus Henrique Loiola Ponte de Souza (Federação Brasileira de Gastroenterologia - FBG. Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Fauze Maluf Filho (Sociedade Brasileira de Endoscopia Digestiva - SOBED. Hospital Sírio Libanês, São Paulo, SP, Brasil)
• Cervantes Caporossi (Sociedade Brasileira de Nutrição Parenteral e Enteral – SBNPE. Universidade Federal de Mato Grosso, Cuiabá, MT, Brasil)
• Luiz João Abrahão Junior (Sociedade Brasileira Motilidade Digestiva e Neurogastroenterologia – SBMDN. Universidade Federal do Rio de Janeiro, RJ, Brasil)
• Cristiane Alves Villela Nogueira (Sociedade Brasileira Hepatologia – SBH. Universidade Federal do Rio de Janeiro, RJ, Brasil)
• Roberta Gonçalves da Silva (Associação Brasileira de Disfagia – ABD. Universidade Estadual Paulista Júlio de Mesquita Filho, Marília, SP, Brasil)
• José Miguel Luz Parente (Grupo de Estudos da Doença Inflamatória Intestinal do Brasil – GEDIIB Universidade Federal do Piauí, Teresina, PI, Brasil)
• José Celso Ardengh (E-video)

Editorial coordination and Publishing

• Isabella Coelho

• Adérson Omar Mourão Cintra Damião (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Adriana Safatle Ribeiro (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Alberto Queiroz Farias (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Alfredo Jose Afonso Barbosa (Faculdade de Medicina, Universidade Federal de Minas Gerais – UFMG, Belo Horizonte, MG, Brasil)
• Aloísio Souza Felipe Silva (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Ana Cláudia de Oliveira (Faculdade de Medicina, Universidade Federal de São Carlos - UFSCar, Piracicaba, SP, Brasil)
• Ana Maria Furkim (Universidade Federal de Santa Catarina – UFSC, Florianópolis, SC, Brasil)
• Andrea Bottoni (Universidade de Mogi das Cruzes, SP, Brasil)
• Angelo Alves de Mattos (Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, Brasil)
• Angelo Paulo Ferrari Junior (Faculdade de Medicina, Universidade Federal de São Paulo - UNIFESP, São Paulo, SP, Brasil)
• Ângelo Zambam de Mattos (Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, Brasil)
• Armenio Aguiar dos Santos (Universidade Federal do Ceará – UFC, Fortaleza, CE, Brasil)
• Ary Nasi (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Avelino Luiz Rodrigues (Faculdade de Medicina, Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Ben-Hur Ferraz Neto (Faculdade de Medicina, Pontifícia Universidade Católica – PUC-SP, Sorocaba, SP, Brasil)
• Bruno Zilberstein (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Camila Colás Sabino de Freitas (Hospital IGESP, São Paulo, SP, Brasil)
• Carlos Alberto Cappellanes (Hospital Sírio Libanês, São Paulo, SP, Brasil)
• Carlos Eduardo Jacob (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Carlos Walter Sobrado (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Claudemiro Quireze Júnior (Faculdade de Medicina, Universidade Federal de Goiás – UFG, Goinânia, GO, Brasil)
• Claudia P. Marques Souza de Oliveira (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Claudio Saddy Rodriguez Coy (Universidade Estadual de Campinas - UNICAMP, Campinas, SP, Brasil)
• Cristiane Valle Tovo (Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, Brasil)
• Cyrla Zaltman (Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, Brasil)
• Dalton Marques Chaves (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Dan Linetzky Waitzberg (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Daniel Sifrim (Barts and The London School of Medicine and Dentistry, London, UK)
• Decio Chinzon (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Delta Madureira Filho (Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, Brasil)
• Denis Pajecki (Faculdade de Medicina, Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Dulce Reis Guarita (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Edison Roberto Parise (Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Edmundo Machado Ferraz (Universidade Federal de Pernambuco – UFPE, Recife, PE, Brasil)
• Edmundo Pessoa de Almeida Lopes Neto (Faculdade de Medicina, Universidade Federal de Pernambuco – UFPE, Recife, PE, Brasil)
• Edna Frasson de Souza Montero (Faculdade de Medicina, Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Edna Strauss (Hospital do Coração, São Paulo, SP, Brasil)
• Edson Ide (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Eduardo Guimarães Hourneaux de Moura (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Eponina Maria Oliveira Lemme (Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, Brasil)
• Everson Luiz de Almeida Artifon (Faculdade de Medicina, Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Fabio Guilherme Campos (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Fabio Pinatel Lopasso (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Fauze Maluf Filho (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Fernando Pardini (IBEPEGE, São Paulo, SP, Brasil)
• Flair José Carrilho (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Flávio Antonio Quilici (Faculdade de Medicina, Pontifícia Universidade Católica – PUC, Campinas, SP, Brasil)
• Flávio Cesar Viani (Universidade Cruzeiro do Sul, São Paulo, SP, Brasil)
• Flavio Steinwurz (Hospital Israelita Albert Einstein, São Paulo, SP, Brasil)
• Gabriela Perdomo Coral (Universidade Federal de Ciências da Saúde de Porto Alegre - UFCSPA, Porto Alegre, RS, Brasil)
• Gaspar de Jesus Lopes Filho (Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Gerson Ricardo de Souza Domingues (Faculdade de Medicina, Universidade Federal do Rio de Janeiro - UFRJ, Rio de Janeiro, RJ, Brasil)
• Genoile Oliveira Santana (UFBA, Salvador, BA)
• Gilda Porta (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Heitor Rosa (Faculdade de Medicina, Universidade Federal de Goiás – UFG, Goiânia, GO, Brasil)
• Helma Pinchemel Cotrim (Universidade Federal da Bahia – UFBA, Salvador, BA, Brasil)
• Horus Antony Brasil (Hospital Sírio Libanês, São Paulo, SP, Brasil)
• Ismael Maguilnik (Moinhos de Vento, Porto Alegre, RS, Brasil)
• Ivan Cecconello (Faculdade de Medicina, Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Jaques Waisberg (Faculdade de Medicina do ABC – FMABC, Santo André, SP, Brasil)
• João Gomes Netinho (Faculdade de Medicina de São José do Rio Preto – FAMERP, SP, Brasil)
• Joaquim Prado P. de Moraes Filho (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Joel Faintuch (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Joffre Rezende Filho (Faculdade de Medicina, Universidade Federal de Goiás – UFG, Goiânia, GO, Brasil)
• Joffre Rezende Neto (Instituto de gastroenterologia de Goiânia, GO, Brasil)
• Jorge Carim Cassab (Santa Casa, São Paulo, SP, Brasil)
• Jose Alejandro Piscoya Rivera (Facultad de Medicina, Universidad Peruana de Ciencias Aplicadas, Lima, Peru)
• José Celso Ardengh (Faculdade de Medicina, Universidade de São Paulo – FMUSP, Ribeirão Preto, São Paulo, Brasil)
• José Eduardo Monteiro da Cunha (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• José Márcio Neves Jorge (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Juan Sebastian Lasa (Centro de Educación Médica e Investigación Clínica – CEMIC, Buenos Aires, Argentina)
• Julio Carlos Pereira Lima (Universidade Federal de Ciências da Saúde de Porto Alegre – UFCSPA, Porto Alegre, RS, Brasil)
• Julio Cesar Bai (Hospital de Gastroenterologia Dr. Carlos Bonorino Udaondo – Buenos Aires – Argentina)
• Julio Cezar Uili Coelho (Universidade Federal do Paraná - UFPR, Curitiba, PR, Brasil)
• Julio Yarmuch (Hospital Clinico Universidad de Chile, Santiago, Chile)
• Lucia Camara de Castro Oliveira (CEPEMED, Rio de Janeiro, RJ, Brasil)
• Luis Fernando Corrêa Zantut (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Luis Soifer (Instituto Universitário CEMIC, Buenos Aires, Argentina)
• Luiz Augusto Carneiro D'Albuquerque (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Luiz Gonzaga Vaz Coelho (Universidade Federal de Minas Gerais – UFMG, Belo Horizonte, MG, Brasil)
• Manoel dos Passos Galvão Neto (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Marcel Autran Cesar Machado (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Marcelo Averbach (Hospital Sírio Libanês, São Paulo, SP, Brasil)
• Marcelo Eidi Nita (Faculdade de Medicina, Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Marcelo Gil Cliquet (Faculdade de Medicina, Pontifícia Universidade Católica – PUC-SP, Sorocaba, SP, Brasil)
• Marco Aurélio Santo (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Marcos Antonio Cyrillo (Hospital IGESP, São Paulo, SP, Brasil)
• Maria Cristina Elias (UNIFESP, São Paulo, SP)
• Maria do Carmo Friche Passos (Faculdade de Medicina, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil)
• Mário Guimarães Pessôa (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Mario Peribañez Gonzalez (Instituto de Infectologia Emilio Ribas, São Paulo, SP, Brasil)
• Mauro Bafutto (Instituto Goiano de Gastroenterologia, GO, Brasil)
• Mauro Batista de Morais (Faculdade de Medicina, Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Mauro Sérgio Toporovski (Santa Casa, São Paulo, SP, Brasil)
• Milton Melciades Barbosa Costa (Faculdade de Medicina, Universidade Federal do Rio de Janeiro – UFRJ, Rio de Janeiro, RJ, Brasil)
• Nayara Salgado Carvalho (Hosp. Israelita Albert Einstein, São Paulo, SP)
• Nelson Adami Andreollo (Universidade Estadual de Campinas – UNICAMP, Campinas, SP, Brasil)
• Nora Manoukian Forones (Faculdade de Medicina, Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Odery Ramos (Faculdade de Medicina, Universidade Federal do Paraná – UFPR, Curitiba, PR, Brasil)
• Osvaldo Malafaia (Faculdade de Medicina, Universidade Federal do Paraná – UFPR, Curitiba, PR, Brasil)
• Paula Bechara Poletti (Hospital do Coração, São Paulo, SP, Brasil)
• Paulo Gustavo Kotze (Hospital Universitário Cajuru, Pontifícia Universidade Católica do Paraná – PUC-PR, Curitiba, PR, Brasil)
• Paulo Herman (Faculdade de Medicina, Universidade de São Paulo - FMUSP, São Paulo, SP, Brasil)
• Paulo Lisboa Bittencourt (Hospital Português, Salvador, BA, Brasil)
• Paulo Sakai (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Raymundo Paraná (Universidade Federal da Bahia – UFBA, Salvador, BA, Brasil)
• Renata Furlan Viebig (Universidade Mackenzie, São Paulo, SP, Brasil)
• Renato Mitsunori Nisihara (UFPR, Curitiba, PR)
• Ricardo Correa Barbuti (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Roberta Gonçalves da Silva (Universidade Estadual Paulista – UNESP, Botucatu, SP, Brasil)
• Roberto Carlos Burini (Departamento de Saúde Pública, Universidade Estadual Paulista – UNESP, Araraquara, SP, Brasil)
• Roberto Oliveira Dantas (Faculdade de Medicina, Universidade de São Paulo – FMUSP, Ribeirão Preto, SP, Brasil)
• Rodrigo Oliva Perez (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Rogerio Saad-Hossne (UNESP, Botucatu, SP)
• Ronaldo Mafia Cuenca (Universidade de Brasília – UnB, Brasília, DF, Brasil)
• Rosa Leonôra Salerno Soares (Faculdade de Medicina Fluminense – UFF, Niterói, RJ, Brasil)
• Schlioma Zaterka (Faculdade de Medicina, Universidade de São Paulo –FMUSP, São Paulo, SP, Brasil)
• Sender Jankiel Miszputen (Faculdade de Medicina, Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Sergio Carlos Nahas (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Shirley Ramos da Rosa Utiyama (Universidade Federal do Paraná – UFPR, Curitiba, PR, Brasil)
• Sonia Penteado (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Sthela Maria Murad Regadas (Universidade Federal do Ceará – UFC, Fortaleza, CE, Brasil)
• Suzane Kioko Ono (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Tomás Navarro Rodriguez (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Tomazo Antonio Prince Franzini (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Ulysses Fagundes Neto (Faculdade de Medicina, Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Ulysses Ribeiro Júnior (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Venâncio Avancini Ferreira Alves (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Vera Lucia Sdepanian (Universidade Federal de São Paulo – UNIFESP, São Paulo, SP, Brasil)
• Wallace Acioli (Hospital da Criança de Brasília, Brasília, DF, Brasil)
• Wellington Andraus (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Wilson Roberto Catapani (Faculdade de Medicina do ABC - FMABC, Santo André, SP, Brasil)
• Yu Kar Ling Koda (Instituto da Criança, Universidade de São Paulo – USP, São Paulo, Brasil)

• Adávio de Oliveira e Silva (Faculdade de Medicina, Universidade de São Paulo – FMRP-USP, Ribeirão Preto, SP, Brasil)
• Angelita Habr-Gama (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Arthur Belarmino Garrido Junior (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Cervantes Caporossi (Universidade Federal de Mato Grosso – UFMT, Cuiabá, MT, Brasil)
• Desidério Roberto Kiss (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Gaspar de Jesus Lopes Filho (Faculdade de Medicina, Universidade Federal de São Paulo - UNIFESP, São Paulo, SP, Brasil)
• Helio Moreira (Faculdade de Medicina, Universidade Federal de Goiás – UFG, Goiânia, GO, Brasil)
• João Batista Marchesini (Faculdade de Medicina, Universidade Federal do Paraná – UFPR, Curitiba, PR, Brasil)
• Joaquim Gama Rodrigues (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Lorete Maria da Silva Kotze (Faculdade de Medicina, Pontifícia Universidade Católica – PUC-PR, Curitiba, PR, Brasil)
• Luiz Rohde (Faculdade de Medicina, Universidade Federal do Rio Grande do Sul – UFRS, Porto Alegre, RS, Brasil)
• Marcel Cerqueira César Machado (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Maria Aparecida Coelho de Arruda Henry (Faculdade de Medicina, Universidade Estadual Paulista – UNESP, Botucatu, SP, Brasil)
• Paulo Roberto Arruda Alves (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Renato Bonardi (Faculdade de Medicina, Universidade Federal do Paraná – UFPR, Curitiba, PR, Brasil)
• Samir Rasslam (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)
• Sérgio Brenner (Faculdade de Medicina, Universidade Federal do Paraná – UFPR, Curitiba, PR, Brasil)
• William Abrão Saad (Faculdade de Medicina, Universidade de São Paulo – FMUSP, São Paulo, SP, Brasil)

• Peter Malfertheiner, MD (Otto-von-Guericke-Universität, Magdeburg, Germany)
• Francis Megraud, MD (INSERM - U853, University of Bordeaux, Bordeaux, France)
• Daniel Sifrim, MD, PhD (Barts and The London School of Medicine and Dentistry, London, UK)
• Steven Wexner MD, PhD (Cleveland Clinic Florida, Weston, FL, USA)
• Mark Scott, MD, PhD (Royal London Hospital, London, UK)
• Etsuro Yazaki, MD, PhD, (Wingate Institute of Neurogastroenterology, London, UK)
• Eamonn Martin Quigley, MD (Houston Methodist Gastroenterology Associates, USA)

Expedient

• Isabella Coelho

The Archives of Gastroenterology publishes originals and unseen contributions, from national and foreign researchers, compatible with the goals of the Journal and suited to the scientific and editorials standards.

The submission of the manuscript implies that the work in full or part (s) it has not been published in another source or means of communication and not under review in another journal for publication.

The goal of the Journal is to publish only Original studies, from clinical or surgical nature, new techniques, epidemiology studies in area of Endoscopy, Surgery, Hepatology, Digestive Motility, Clinical Gastroenterology, Experimental Surgery, Pediatric Gastroenterology, Gastroenterological Clinical Pathology, and Nutrition.

It also publishes Editorials, Letter to the Editor, Consensus, Brief Communication, Supplements, Review articles and E-Video.

The assessment work is done impartially and anonymous that is, omitting to the reviewers, any identification of its origin. Original Articles are evaluated by at least two reviewers (peer review). The estimated time process is 90 days from submission. The decision about acceptance for publication is taken by the Editorial Board.

No fee is required from authors for submission, evaluation and publication of articles. The Archives of Gastroenterology is available online with an open and free access. It is not necessary to ask the journal for permission for electronic copy, provided that the proper credit is given to the original source.

No any article processing charge are impose to the authors. The Archives of Gastroenterology is full available with an open and free access.

General rules

The text must be in English language.

The number of authors is limited to six for Original Articles and three for Brief Communication. Exceptions can be made in the case of multicentric studies.

The word limit for Brief Communication recommended is no more than 2500; it may contain a figure and a table and the references do not exceed 15.

Articles of research involving human subjects must be marked in Methods section, expressly agreed with the ethical standards and with due informed consent of the participants. Research with human must bring the title page the number of the opinion of the Committee's approval of Research Ethics. Brazilian studies should be in accordance with Resolution 466/2012 of the National Health Council of the Ministry of Health (Brazil), which deals with the Code of Ethics for Human Research, and for studies outside Brazil, shall be in accordance with the Declaration of Helsinki.

Studies involving animals should state the agreement with international ethical principles (i.e., Committee for Research and Ethical Issues of the International Association for the Study of Pain, published in PAIN, 16: 109-110, 1983) and national instructions (Laws 6638 / 79, 9605/98, 24665/34 Decree) governing animal research and bring the number of the opinion approved by the Ethics Committee on Animal Research.

The journal Archives of Gastroenterology supports the clinical trial registration policies of the World Health Organization (WHO) and the International Committee of Medical Journal Editors (ICMJE), recognizing the importance of these initiatives for the international registration and dissemination of information on clinical trials, in open access. Therefore, from 2007 onwards, only clinical research articles that have received an identification number in one of the Clinical Trials Registers validated by the criteria established by the WHO and ICMJE will be accepted for publication, whose addresses are available on the ICMJE website . The identification number must be registered in "Methods".

It is recommended a cover letter with the intention in publish on the Archives of Gastroenterology, highlighting the importance of this publication and research. This letter must be written in the “Author’s Cover Letter” field in the online submission.

Format

The submitted manuscript must be sent in Microsoft Word format and organized as follows:

1) Title in English and Portuguese; for foreign authors the translation will be done.

2) Authors names; do not insert staff positions or similar adjectives.

3) For each author should be described his participation in the study. (i.e. data collection, survey execution, writing of text, statistical analysis and so on).

4) The department and institution where the work was performed.

5) Orcid from all authors.

6) Acknowledgement of grants and other financial support. Interest of conflicts must be declared or not if so. If so, sponsors must be declared.

7) Structured Abstract (Background, Objective, Methods, Results, Conclusion) - The papers should be sent in English and Portuguese (200 – 600 words); abbreviations, footnotes and references should be avoided; for foreign authors the translation will be done.

8) Keywords (3 to 10). Whenever possible use terms of Medical Subject Headings (MESH) list from MEDLINE. Information available from: http://www.nlm.nih.gov/mesh/meshhome.html. The search can also be done on the Descritores em Ciências da Saúde, available from: https://decs.bvsalud.org/.

9) We strongly recommend this paper division: Introduction; Methods; Results; Discussion; Conclusion; Acknowledgements.

10) All contributors who do not meet the criteria for authorship may be mentioned in Acknowledgments.

11) References - Archives of Gastroenterology adopts the Vancouver format. Complete text in: https://www.nlm.nih.gov/bsd/uniform_requirements.html Cite references in the text using Arabic numerals in the order of appearance, within parentheses. For up to six authors, list all authors. For more than six authors, list first six authors followed by “et al.”.

12) Tables and Figures should be cited in the text in Arabic numerals. Preferably, attached separately in JPG or PNG. If they are inside the article, they should after the references. Please do not insert tables and figures in the middle of the text.

13) Tables (in Microsoft Word or Excel format) - Is called "Table" only when there are numeric results. Explanations and abbreviations should be placed in the footer of the table.

14) Figures - Named as "Figure" whenever it is: written questionnaire, photographs, graphics and drawings. They must be sent in high resolution digital format (2 mb). The Figures should contain a short text on the subject.

Submissions only through the ScholarOne interface, on SciELO Portal:

http://mc04.manuscriptcentral.com/ag-scielo

We reiterate that no fee is required from authors for submission, evaluation and publication of articles. Archives of Gastroenterology is available online with an open and free access:
https://www.scielo.br/j/ag/

Authorship:

• E-Videos may have a maximum of six authors.
• Authors names: do not insert staff positions or similar adjectives. Include the department and institution where the work was performed.
• The name, telephone number and electronic address of author to whom galley proofs and requests for reprints should be sent.

Main text:

• Title: (in English and Portuguese); for foreign authors the translation will be done.
• Please include the following in the main text:
• Text: no more than 400 words.
• A Video legend must be insert after the main text and must be as short as possible (maximum 40 words).

Video:

• Only one video is allowed for each submission.
• Note for not appear any identification from the patient (name or institutional number for example).
• Only AVI or MP4 formats are acceptable.
• Video time should not exceed 4 minutes.
• Make sure that steps and/or main findings explained and highlighted in the video must have overlay titles.

Figures:

• A maximum of six images can be submitted: Upload it separately in TIF or JPG format with at least 300 dpi. Each one must have a number and a legend.

References:

• The reference rules are the same as those of articles. Please read above. No more than six and numbered and cited at the main text.

What is the ideal article length? What is the maximum and minimum number of pages or words?

We do not limit the number of pages of the manuscript, or the number of characters, or the number of words in the abstract and text, as we understand that a suitable research for submission has as a principle the exposure of data in a revised form. We assume that the authors will not expose unnecessary information, as well as they will do their best not to forget key elements. If reviewers deem the amount of information to be excessive, they will recommend reviewing the text.

Usually original articles are about 1500 or up to 3000 words in the main text (Introduction, Methods, Results, Discussion, Conclusion). But there is no rule.

Is there a limit on references?

No. Usually original articles have around 30, 40 references. And the review articles, about 60. But it doesn't have a rule.

Is there a limit on tables/figures?

No. There are articles that do not need to present any tables or figures, there are articles that need to present eight tables, others need five figures etc. That is, there is no rule, as it depends on the need.

Should tables and figures be submitted on the platform as individual files separate from the manuscript?

Tables can be placed inside the manuscript, on the last pages, after the list of references, or can be sent as a single file. If a table has many columns and you need to use the "landscape" orientation (sheet horizontally), you can send it separately.

It is very important that they are in editable format in Microsoft Word. Do not use Excel or photo of the table pasted as a picture in Microsoft Word.

Don't worry about the design of the tables, they don't need (and shouldn't) resemble what we do in PDFs of published articles. We prefer that they contain apparent grid lines.

Remember that values in English have decimal places separated by a dot, not a comma as it is in Portuguese.

Send the pictures preferably in JPG or PNG format, or even in PDF, separated from each other. If the figure is a flowchart, it can be sent in an editable format in Microsoft Word.

After submission, how long does the article take to be published?

It is not possible to predict the date of publication.

After the article is submitted, it undergoes evaluation by at least two reviewers.

They have 1 month to accept the task invitation and 1 month to return it.

If they take 1 month to respond that they are unavailable, we will make new invitations to other reviewers.

After we receive the experts' assessment, they may recommend review of the article (minor or major), immediate accept or rejection.

If review is requested, authors have 2 months to return a 2nd version.

If approved, the article enters the list of approved. From this moment on, we have an average of 180 days for publication.

In other words, it may happen that an article that was approved 3 months ago is published together with another that was approved a week ago, as the published list is about 25 per issue.

I received a decision in which reviewers asked for improvements in English. Where can I attach the translation certificate?

Attach the certificate in the Cover Letter field. It will not be sent to reviewers, as we need to keep the names of the authors and the institution confidential.

I made a submission and received the decision that I must review and resubmit. With a few days before the submission deadline expires, I received an email from the System informing me that I would have up to X days to send the review, however, I accessed the System and a notice appeared that the deadline had expired. Why? What should I do?

When the System notifies that the author has until the 10th (for example) to send the review, it means that up to 23 hours and 59 minutes of the 9th, the submission is available. If the deadline has expired, DO NOT create a new submission to submit the revised article. Send an email to secretariaarqgastr@hospitaligesp.com.br and wait for our return so that we can change the term of the System and the review continue with the same record.

How should I write the affiliations within the article?

We try to follow the SciELO guidelines as much as possible. Regarding affiliations, in their guide is:

“The identification of institutional instances must, whenever applicable, indicate the corresponding hierarchical units. It is recommended that hierarchical units are presented in descending order, for example, university, faculty and department.

Under no circumstances should affiliations be accompanied by the authors' titles or mini-curricula. These, when present, must be published separately from the affiliations as the author's notes.

The names of institutions and programs must be presented in full and in the institution's original language or in the English version, when the writing is not Latin. See the examples: University of São Paulo, School of Medicine, Department of Pediatrics, São Paulo, SP, Brazil. (...)"

If the authors' affiliation is repeated, use the same number to designate the institution.

Write the membership number next to each name. Below the authors' names, write the numbered affiliations.

If an author is affiliated with more than one institution, they must receive different numbers, that is, each affiliation will have a number and these numbers must come next to the author's name.

What is the ideal model to submit the article?

The ideal model follows this sequence of information:

• Title in English.
• Title in Portuguese (it is not necessary for foreign authors; if the article is approved, we will do the translation).
• Authors' names with numbers next to each name to indicate affiliations below.
• Affiliations in the original language, with the institution's hierarchy in descending order, i.e., university, faculty, department, for example.
• Repeat the names of the authors to write the orcid of each one. Registration and/or consultation must be done at the link: https://orcid.org/
• Authors' contribution with the contribution of each one in the production of the article. It can be written in item form or textual.
• Corresponding author data (name, email and phone are sufficient)
• Acknowledgments (if any)
• Declaration of conflict of interest and subsidy, for example:

Declared conflict of interest of all authors: none

Disclosure of funding: no funding received

• Abstract in Portuguese structured in: Contexto, Objetivo, Métodos, Resultados, Conclusão, Palavras-chave. (for foreign authors it is not necessary; if the article is approved, we will do the translation)
• Text of the article. Provide references in parentheses or square brackets, whichever is better not to be confused with other numeric data; if possible, use the references in parentheses in superscript and highlighted in red. For example: text text text(1,5).
• List of References
• Editable tables (if any)
• Title of figures (if any)

Please note that we do not ask authors to submit the article without identifiers; this work will be done by the editorial team when it is sent to the reviewers.

How should I fill in the submission fields?

In the title field, put the title in English only.

In the Abstract field, place the Abstract in English only.

In the Cover Letter field, just write (it can be in Portuguese) within the field a cover letter of the manuscript addressed to the Editor-in-Chief. If you wish, you can attach a translation certificate.

In the field of registration of authors, check if the author already has a registration, so that he does not have two accounts in the System. Try to leave the sequence of names the same as what you write inside the article. Don't worry if you can't link the orcid numbers of the authors, the important thing is that the orcid numbers are written inside the article. (In 2019 the Orcid Organization made an update in its program that affected the names that already had orcid. Therefore, each author needs to enter the ScholarOne System with their personal login and password to validate the orcid itself so that it is accessible to the registration of the submission). Again: it is not mandatory to present the orcid in the registration, it is only mandatory within the article.

My article received the “reject & resubmit” decision. I made changes and created a new submission. I would like to send an answer to the reviewers, but I have not found a field for this purpose. How can I proceed?

When the article receives the decision of “minor revision” or “major revision”, the author finds within the new submission a field to write to the reviewers. However, when the decision is “reject & resubmit”, this field does not exist. Then, you can attach it to the Cover Letter field that we will forward to the reviewers. This is not to say that the evaluators will necessarily be the same. Please do not sign the letter.

I want to send a video, but there is no “E-video” option in the article type field. I found only: Original Article, Experimental Gastroenterology, Review, Short Communication, Pediatric Gastroenterology, Clinical Trial, Consensus, Letter to Editor. Which one should I mark?

Original Article.