Raphael Gurgel de Carvalho Division of Coloproctology, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Marley Ribeiro Feitosa *Division of Coloproctology, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Gustavo Urbano Division of Coloproctology, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Vivian Regina Guzela Division of Coloproctology, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Edwaldo Edner Joviliano Division of Vascular and Endovascular Surgery, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Omar Féres Division of Coloproctology, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
Jose Joaquim Ribeiro da Rocha Division of Coloproctology, Department of Surgery and Anatomy, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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Surgery performed at the Department of Surgery and Anatomy, of Ribeirão Preto Medical School, University of São Paulo (USP).