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Revista Brasileira de Reumatologia

Print version ISSN 0482-5004On-line version ISSN 1809-4570

Rev. Bras. Reumatol. vol.57 no.6 São Paulo Nov./Dec. 2017 

Original articles

Initial digital vasculitis in a large multicenter cohort of childhood-onset systemic lupus erythematosus

Ana Paula Sakamotoa 

Clovis Artur Silvab  c 

Marco Felipe Castro da Silvab 

Anandreia Simões Lopesa 

Gleice Clemente Souza Russoa 

Adriana Maluf Elias Sallumb 

Katia Kozub 

Eloisa Bonfác 

Claudia Saad-Magalhãesd 

Rosa Maria Rodrigues Pereirac 

Claudio Arnaldo Lena 

Maria Teresa Terreria  * 

aUniversidade Federal de São Paulo (UNIFESP), Unidade de Reumatologia Pediátrica, São Paulo, SP, Brazil

bUniversidade de São Paulo (USP), Faculdade de Medicina, Unidade de Reumatologia Pediátrica, São Paulo, SP, Brazil

cUniversidade de São Paulo (USP), Faculdade de Medicina, Divisão de Reumatologia, São Paulo, SP, Brazil

dUniversidade Estadual Paulista (UNESP), Faculdade de Medicina de Botucatu, Hospital das Clínicas de Botucatu, Botucatu, SP, Brazil



To assess clinical digital vasculitis (DV) as an initial manifestation of childhood-onset systemic lupus erythematosus (cSLE) within a large population.


Multicenter cross-sectional study including 852 cSLE patients (ACR criteria) followed in ten Pediatric Rheumatology centers in São Paulo State, Brazil.


DV was observed in 25/852 (3%) cSLE patients. Periungual hemorrhage was diagnosed in 12 (48%), periungual infarction in 7 (28%), tip finger ulceration in 4 (16%), painful nodules in 1 (4%) and gangrene in 1 (4%). A poor outcome, with digital resorption, occurred in 5 (20%). Comparison of patients with and without DV revealed higher frequency of malar rash (80% vs. 53%, p = 0.008), discoid rash (16% vs. 4%, p = 0.017), photosensitivity (76% vs. 45%, p = 0.002) and other cutaneous vasculitides (80% vs. 19%, p < 0.0001), whereas the frequency of overall constitutional features (32% vs. 61%, p = 0.003), fever (32% vs. 56%, p = 0.020) and hepatomegaly (4% vs. 23%, p = 0.026) were lower in these patients. Frequency of female gender, severe multi-organ involvement, autoantibodies profile and low complement were alike in both groups (p > 0.05). SLEDAI-2K median, DV descriptor excluded, was significantly lower in patients with DV compared to those without this manifestation [10 (0-28) vs. 14 (0-58), p = 0.004]. Visceral vasculitis or death were not observed in this cSLE cohort. The frequency of cyclophosphamide use (0% vs. 18%, p = 0.014) was significantly lower in the DV group.


Our large multicenter study identified clinical DV as one of the rare initial manifestation of active cSLE associated with a mild multisystemic disease, in spite of digital resorption in some of these patients.

Keywords: Digital vasculitis; Childhood-onset systemic lupus erythematosus; Vasculitis; Sledai-2K



Avaliar a vasculite digital (VD) clínica como uma manifestação inicial do lúpus eritematoso sistêmico de início na infância (LESi) em uma grande população.


Estudo transversal multicêntrico que incluiu 852 pacientes com LESi (critérios do ACR), acompanhados em dez centros de reumatologia pediátrica do Estado de São Paulo.


Observou-se VD em 25/852 (3%) pacientes com LESi. Diagnosticaram-se hemorragia periungueal em 12 (48%), infarto periungueal em sete (28%), úlcera de ponta de dígito em quatro (16%), nódulos dolorosos em um (4%) e gangrena em um (4%). Um desfecho ruim, com reabsorção digital, ocorreu em cinco (20%) pacientes. A comparação entre pacientes com e sem VD revelou maior frequência de erupção malar (80% vs. 53%, p = 0,008), erupção discoide (16% vs. 4%, p = 0,017), fotossensibilidade (76% vs. 45% p = 0,002) e outras vasculites cutâneas (80% vs. 19%, p < 0,0001), enquanto a frequência de características constitucionais totais (32% vs. 61%, p = 0,003), febre (32% vs. 56% p = 0,020) e hepatomegalia (4% vs. 23%, p = 0,026) foram menores nesses pacientes. A frequência do gênero feminino, o envolvimento grave de múltiplos órgãos, perfil de autoanticorpos e baixo complemento foram semelhantes nos dois grupos (p > 0,05). A mediana no Sledai-2 K, exclusive o descritor de VD, foi significativamente menor nos pacientes com VD em comparação com aqueles sem essa manifestação [10 (0 a 28) vs. 14 (0 a 58), p = 0,004]. Não foram observadas vasculite visceral nem morte nessa coorte de pacientes com LESi. A frequência de uso de ciclofosfamida (0% vs. 18%, p = 0,014) foi significativamente menor no grupo VD.


Este grande estudo multicêntrico identificou a VD clínica como uma rara manifestação inicial do LESi ativo, associada a doença multissistêmica leve, apesar da ocorrência de reabsorção digital em alguns desses pacientes.

Palavras chave: Vasculite digital; Lúpus eritematoso sistêmico de início na infância; Vasculite; Sledai-2K


Systemic lupus erythematosus (SLE) is a multisystemic autoimmune chronic disease more common in adults (aSLE), with only 10-20% of cases beginning during childhood or adolescence.1-3 Childhood-onset SLE (cSLE) is characterized by more severe and cumulative acute organ and system involvement comparing to aSLE. Mucocutaneous involvement is one of the most common manifestations and has been reported in up to 80% of children and adolescents at the time of diagnosis.1,2

Vascular inflammatory process is an important feature of SLE and affects a large subset of patients with skin manifestations at any time of disease course.4-7 SLE clinical digital vasculitis (DV) includes painful ulceration and nodules may result in splinter hemorrhages and digital infarcts1,8,9 and it may be present in 16-45% of aSLE patients.5,7,8,10

Data on cSLE patients are limited to case reports and small series.1,9,11 There are no published data characterizing DV in a large population of childhood lupus patients.

Therefore, the objective of this study was to assess DV as an initial manifestation in a large multicenter study, evaluating the possible association with demographic and clinical features, laboratorial exams, treatment and outcomes in cSLE onset.


Study design and patients

This is a retrospective multicenter study including 1017 cSLE patients followed in ten Pediatric Rheumatology tertiary referral centers in São Paulo state, Brazil. One hundred and sixty-five patients were excluded due to: incomplete medical charts (n = 96), undifferentiated connective tissue disorder with 3 or fewer American College of Rheumatology (ACR) criteria for SLE12 (n = 43), isolated cutaneous lupus erythematosus (n = 11), neonatal lupus erythematosus (n = 8), drug-induced lupus (n = 5) and other autoimmune diseases (n = 2). Thus, the study group comprised 852 cSLE patients; all fulfilled the ACR criteria12 and presented disease onset before 18 years old13 with a current age up to 25 years. Committee for Research Ethics of each center approved the study.

An investigator meeting was held for this study to define the protocol, including definitions of clinical, laboratory and treatment parameters and disease activity and damage score. All investigators used the same specific database.

Patient's medical charts were meticulously revised according to a standardized protocol for demographic data, DV characteristics, other clinical features, laboratorial findings, therapeutic data and DV outcome (digital resorption, visceral vasculitis and death). Clinical DV was defined as ulceration, gangrene, tender finger nodules, periungual infarction or splinter hemorrhages of the digits according to SLE Disease Activity Index 2000 score (SLEDAI-2K).14

Demographic data, clinical evaluation, disease activity, disease damage and drug therapy

Demographic data included gender, ethnicity and age at cSLE onset. Descriptors and definitions of SLEDAI-2K were used to score disease activity.14 Other SLE clinical manifestations included: fever (axillary temperature higher than 37.8 °C), weight loss > 2 kg, lymphadenopathy (peripheral lymph node enlargement > 1.0 cm), hepatomegaly [based on physical exam with liver edge ≥2 cm below the right costal margin or imaging (ultrasound or computer tomography when available)] and splenomegaly [based on physical exam with palpable spleen or imaging (ultrasound or computer tomography when available)].15 Neuropsychiatric lupus included 19 syndromes according to ACR classification criteria.16 Antiphospholipid syndrome was diagnosed according to the preliminary criteria for the classification of pediatric antiphospholipid syndrome.17 High blood pressure was defined as systolic and/or diastolic blood pressures ≥95th percentile for gender, age and height on ≥3 occasions.18 Acute kidney injury was determined by sudden increase in serum creatinine above 2 mg/dl19 or by modified RIFLE (Risk, Injury, Failure, Loss of kidney function and End-stage kidney disease) criteria.20 Chronic renal disease was defined as structural or functional abnormalities of the kidney for ≥3 months (with or without decreased glomerular filtration rate) or glomerular filtration rate < 60 ml/min/1.73 m2 for ≥3 months.21

Laboratorial assessment was comprised of retrospective analysis of erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), complete blood cell count, serum urea and creatinine, urinalysis and 24-h urine protein excretion. Complement levels (CH50, C3 and C4) were assessed by immunodiffusion, turbidimetric immunoassay or immunonephelometry. Antinuclear antibodies (ANA) were tested by indirect immunofluorescence; anti-double-stranded DNA (anti-dsDNA) by indirect immunofluorescence or Enzyme Linked Immuno Sorbent Assay (ELISA) and anticardiolipin (aCL) IgG and IgM by ELISA were carried out at each center. The cutoff values given by the kit manufacturer were used to define normal or abnormal findings. Lupus anticoagulant was detected according to the guidelines of the International Society on Thrombosis and Hemostasis.22

Drug treatment data (prednisone, intravenous methylprednisolone, chloroquine diphosphate, hydroxychloroquine sulfate, methotrexate, azathioprine, cyclosporine, mycophenolate mofetil, intravenous cyclophosphamide, intravenous immunoglobulin, rituximab and plasmapheresis) were also recorded.

Patients were divided in two groups at the cSLE diagnosis for the assessment of cSLE manifestations, laboratory exams and treatment: patients with DV and without DV.

Statistical analysis

All statistical analyses were performed with the Statistical Package for the Social Sciences (SPSS), version 13.0. Results were given as numbers (percentage) for categorical variables, median (range) or mean ± standard deviation (SD) for continuous variables. Comparisons between categorical variables were assessed by Pearson χ-square or Fisher's exact test and continuous variables comparisons were compared by Mann-Whitney test or t test. The significance levels of the independent variable were set at 5% (p < 0.05).


DV was observed in 25/852 (2.9%) cSLE patients at diagnosis. Periungual hemorrhage on the fingers was found in 12 (48%) cSLE patients, periungual infarct in 7 (28%), digital ulceration in 4 (16%), digital gangrene in 1 (4%) and digital painful nodules in 1 (4%) patient. The median of affected fingers or toes was five (1-20). The features of DV and its outcome in 25/852 cSLE are shown in Table 1.

Table 1 Clinical characteristics and outcome of digital vasculitis (DV) in 852 cSLE patients at diagnosis. 

DV characteristics cSLE n = 25 (%)
DV duration, days 56 (10-933)
Number of affected fingers or toes 5 (1-20)
Periungual hemorrhage 12 (48)
Periungual infarct 7 (28)
Ulceration 4 (16)
Gangrene 1 (4)
Painful nodules 1 (4)
Digital resorption 5 (20)
Visceral vasculitis 0 (0)

cSLE, childhood-onset systemic lupus erythematosus.Results are presented as median (range) and n (%).

Further comparisons of demographic data and current clinical manifestations in 852 cSLE patients with and without DV at diagnosis are illustrated in Table 2. The frequency of constitutional features (32% vs. 61%, p = 0.003), fever (32% vs. 56%, p = 0.020), hepatomegaly (4% vs. 23%, p = 0.026) and arterial hypertension (0% vs. 25%, p = 0.001) were significantly lower in cSLE patients with DV compared to those without this manifestation. On the other hand, mucocutaneous involvement (100% vs. 79%, p = 0.005), rash (80% vs. 53%, p = 0.008), discoid lupus (16% vs. 4%, p = 0.017), photosensitivity (76% vs. 45%, p = 0.002) and other skin vasculitis lesions (80% vs. 19%, p < 0.0001) were significantly higher in cSLE patients with DV compared to those without this cutaneous involvement. A tendency of lower frequency of neuropsychiatric (p = 0.059) and renal involvement (p = 0.075) was observed in patients with DV (Table 2). None of the patients with DV had antiphospholipid syndrome or thrombotic thrombocytopenic purpura.

Table 2 Demographic data and current clinical manifestations in 852 childhood-onset systemic lupus erythematosus (cSLE) patients grouped according to digital vasculitis (DV) at the diagnosis. 

Variables With DV (n = 25) Without DV (n = 827) p
Demographic data
Female gender, n = 852 22/25 (88) 710/827 (86) 1.000
Caucasian, n = 830 8/24 (33) 230/806 (29) 0.609
Age at cSLE onset, years, n = 852/852 13 (4.25-17) 11.8 (0.25-17.8) 0.067
Clinical manifestations
Constitutional features, n = 843 8/25 (32) 501/818 (61) 0.003
Fever, n = 837 8/25 (32) 451/812 (56) 0.020
Weight loss > 2 kg, n = 822 7/25 (28) 251/797 (32) 0.385
Reticuloendothelial system involvement, n = 831 5/25 (20) 267/806 (33) 0.199
Lymphadenopathy, n = 825 4/25 (16) 164/800 (21) 0.801
Hepatomegaly, n = 831 1/25 (4) 181/806 (23) 0.026
Splenomegaly, n = 830 0/25 (0) 76/805 (9) 0.157
Mucocutaneous involvement, n = 848 25/25 (100) 651/823 (79) 0.005
Rash, n = 842 20/25 (80) 434/817 (53) 0.008
Discoid lupus, n = 844 4/25 (16) 31/819 (4) 0.017
Photosensitivity, n = 844 19/25 (76) 367/819 (45) 0.002
Mucosal ulcer, n = 845 8/25 (32) 276/820 (34) 0.863
Alopecia, n = 843 11/25 (25) 251/818 (31) 0.156
Other skin vasculitis lesions, n = 844 20/25 (80) 152/819 (19) <0.0001
Musculoskeletal involvement, n = 846 18/25 (72) 561/821 (68) 0.697
Myositis, n = 843 2/25 (8) 32/818 (4) 0.267
Arthritis, n = 850 17/25 (68) 555/825 (67) 0.939
Serositis, n = 847 5/25 (20) 233/822 (28) 0.499
Pleuritis, n = 846 1/25 (4) 148/821 (18) 0.104
Pericarditis, n = 846 5/25 (20) 163/821 (20) 1.000
Neuropsychiatric involvement, n = 847 2/25 (8) 202/822 (25) 0.059
Peripheral nervous system involvement, n = 847 0/25 (0) 7/818 (1) 1.000
Central nervous system involvement, n = 843 2/25 (8) 198/822 (24) 0.090
Nephritis, n = 836 8/25 (32) 406/811 (50) 0.075
Hematuria, n = 825 9/25 (36) 358/800 (45) 0.386
Pyuria, n = 821 4/25 (16) 269/796 (34) 0.083
Urinary cast, n = 822 3/25 (12) 171/797 (22) 0.326
Proteinuria > 0.5 g/day, n = 804 7/25 (28) 368/779 (47) 0.058
Anti-phospholipid syndrome, n = 785 0/25 (0) 15/760 (2) 1.000
Ocular involvement, n = 841 1/25 (4) 13/816 (2) 0.347
Arterial hypertension, n = 840 0/25 (0) 202/815 (25) 0.001
Acute renal failure, n = 839 1/25 (4) 98/814 (12) 0.346
Chronic renal failure, n = 835 0/25 (0) 18/810 (2) 1.000

Results are presented in n (%) and median (range).

Disease activity and laboratory tests of 852 cSLE patients are shown in Table 3. The median of SLEDAI-2K including the DV score item [20 (8-36) vs. 14 (0-58), p = 0.014] was significantly higher in DV patients compared to patients without this complication. On the other hand, when calculating the median of SLEDAI-2K excluding DV descriptor [10 (0-28) vs. 14 (0-58), p = 0.004], it was lower in the group with DV, scored mainly by mucocutaneous involvement [rash (80%) and mucosal ulcers (32%)]. In spite of that, all patients with DV had SLEDAI-2K > 8. The laboratory tests comparison was similar in both groups (p > 0.05, Table 3).

Table 3 Current disease activity and laboratory tests in 852 childhood-onset systemic lupus erythematosus (cSLE) patients grouped according to digital vasculitis (DV) at diagnosis. 

Variables With DV (n = 25) Without DV (n = 827) p
Current disease activity/damage scores
SLEDAI-2K with DV score, n = 789/852 20 (8-36) 14 (0-58) 0.014
SLEDAI-2K without DV score, n = 789/852 10 (0-28) 14 (0-58) 0.004
SLEDAI-2K ≥ 8, n = 789/852 25 (100) 743 (90) 0.062
Laboratory tests
ESR mm/1st/hour, n = 717/852 44 (10-130) 50 (1-160) 0.601
CRP mg/dL, n = 454/852 1.85 (0-47) 3 (0-413) 0.531
Autoimmune hemolytic anemia, n = 830 3/25 (12) 170/805 (21) 0.328
Leucopenia < 4000 mm-3, n = 836 5/25 (20) 222/811 (27) 0.500
Lymphopenia < 1500 mm-3, n = 834 9/25 (36) 349/809 (43) 0.157
Thrombocytopenia, <100,000 mm-3, n = 834 1/25 (4) 128/809 (16) 0.540
Low C3, C4 and/or CH50, n = 727 21/23 (91) 511/704 (73) 0.054
Anti-dsDNA antibody, n = 801 15/25 (60) 542/776 (70) 0.292
Lupus anticoagulant, n = 415 1/18 (6) 64/397 (16) 0.330
Anticardiolipin IgM antibody, n = 498 1/19 (5) 110/479 (23) 0.090
Anticardiolipin IgG antibody, n = 496 3/18 (17) 130/478 (27) 0.270

SLEDAI-2K, Systemic Lupus Erythematosus Disease Activity Index 2000; ESR, erythrocyte sedimentation rate; CRP, C-reactive protein.Results are presented in n (%) and median (range).

Therapy in cSLE patients with and without DV at the time of diagnosis is shown in Table 4. The frequency of cyclophosphamide use (0% vs. 18%, p = 0.014) was significantly lower in patients with DV compared to those without this manifestation. Frequency of other medications use was similar in both groups (p > 0.05, Table 4). No cSLE patient was treated with intravenous immunoglobulin, rituximab or plasmapheresis at diagnosis.

Table 4 Therapy in 852 childhood-onset systemic lupus erythematosus (cSLE) patients grouped according to digital vasculitis (DV) at diagnosis. 

Variables With DV (n = 25) Without DV (n = 827) p
Nonsteroidal anti-inflammatory, n = 836 2/25 (8) 115/811 (14) 0.380
Prednisone, n = 836 24/25 (96) 757/811 (93) 1.000
Current dose, mg/day, n = 762/852 40 (10-75) 40 (3-180) 0.421
mg/kg/day, n = 728/852 1.0 (0.2-2) 1.0 (0.1-4) 0.438
Intravenous methylprednisolone, n = 821 10/25 (40) 348/796 (44) 0.712
Antimalarial drugs, n = 838 18/25 (72) 444/813 (55) 0.085
Immunosuppressive agents
Azathioprine, n = 839 6/25 (24) 100/814 (12) 0.082
Cyclosporine, n = 839 0/25 (0) 8/814 (1) 1.000
Methotrexate, n = 840 3/25 (12) 33/815 (4) 0.087
Mycophenolate mofetil, n = 838 1/25 (4) 8/813 (1) 0.240
Cyclophosphamide, n = 841 0/25 (0) 144/816 (18) 0.014
Intravenous immunoglobulin, n = 845 0/25 (0) 28/820 (3) 1.000
Rituximab, n = 843 0/25 (0) 0/818 (0) -
Plasmapheresis, n = 841 0/25 (0) 11/816 (1) 1.000

Results are presented in n (%).

Regarding outcome, digital resorption was evidenced in 5/25 (20%). Visceral vasculitis or death was not observed in cSLE patients with DV, with no statistical significance compared to the patients with no DV.


Our large multicenter cohort was the first characterizing DV as one of the rare initial manifestations of cSLE patients, mainly associated with other mucocutaneous involvement.

The advantage of including a large cSLE population selected in tertiary referral centers allowed a better evaluation of this rare vasculitic manifestation. The use of a standardized combined database, with proper DV definition, minimized possible bias. However, the main limitation of this study was the retrospective design and possible missing data, as well as no biopsy or angiographic evidence of vasculitis in any of our patients. It was not possible to examine nailfold capillaroscopy because it was not a routine procedure in all participant Pediatric Rheumatology centers. This exam could be useful as a tool for disease activity assessment related to small vessels involvement in cases with DV.23,24

Vascular skin injury is an important characteristic of SLE and affects the majority of patients during the whole disease course and it was reported in association with lupus flares or thrombosis.8-10 We confirmed the possible association with active disease and less probable association with antiphospholipid syndrome due to the absence of antiphospholipid antibodies in DV cases. Of note, SLEDAI-2K evaluation revealed a predominance of mucocutaneous involvement and lower frequency of major organ involvements (neuropsychiatric and renal) reinforcing the concept that DV is associated with mild systemic disease activity and more active skin disease. DV descriptor has weight of 8 and consequently contributes with high values of SLEDAI-2K score, despite of the mild disease that this manifestation represented in our patients.9

Despite the fact that skin vasculitis is a common lupus manifestation at diagnosis of aSLE and cSLE patients, clinical DV was rarely reported in adults11,25 and cSLE.1,8,9 In a cross-sectional study with 168 aSLE patients, DV appeared in 16% of the patients associated with constitutional symptoms, mucocutaneous and hematological manifestations.7 In another study reporting 670 aSLE cases, 11% presented digits ulceration and/or ischemic lesions.25 We observed from our results that although the frequency of DV at cSLE diagnosis is very low, it is in fact associated with permanent damage in 1/5 of the patients.

DV was not associated with any lupus specific antibody. Only a few patients had antiphospholipid antibodies, characterizing a distinct profile from those with more severe organ involvement.26-28 Although it is not possible to exclude antiphospholipid syndrome in these patients, the absence of clinical criteria makes this diagnosis very unlikely. The only clinical feature was the digital thrombotic vascular damage that may have had a similar clinical aspect to lupus vasculitis.4-7 Further studies regarding this association are necessary.

The majority of SLE patients with small vessel lesions had clinical DV characterized by erythematous punctuate lesions on the fingers,7 as observed in our study. This feature is different from those cSLE patients with visceral medium vessel vasculitis associated with increased morbidity and mortality due to involvement of cerebrovascular, gastrointestinal, renal, cardiovascular and pulmonary involvements.29-32 Intravenous cyclophosphamide treatment was less frequent reinforcing the concept of milder systemic activity of the cases. Furthermore, concomitant visceral and cutaneous vasculitis is rare in aSLE (2%),33 emphasizing the importance of distinguishing between these two subtypes of vasculitis.

In conclusion, our large multicenter study identified clinical DV as a rare initial manifestation of active cSLE associated with mild multisystemic disease in spite of accrued damage with digital resorption in some of these patients.


This study was supported by grants from Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq 303422/2015-7 to Clovis Artur Silva, 301805/2013-0 to Rosa Maria Rodrigues Pereira, 305068/2014-8 to Eloisa Bonfá, 301479/2015 to Claudia Saad-Magalhães and 303752/2015-7 to Maria Teresa Terreri), Federico Foundation (to Clovis Artur Silva, Rosa Maria Rodrigues Pereira and Eloisa Bonfá) and by Núcleo de Apoio à Pesquisa "Saúde da Criança e do Adolescente" of USP (NAP-CriAd) to Clovis Artur Silva.


Our gratitude to Ulysses Doria-Filho for the statistical analysis. The authors thank the following Pediatric Rheumatology Divisions and colleagues for including their patients: Pediatric Rheumatology Unit, FMUSP (Adriana Almeida de Jesus, Adriana Maluf Elias Sallum, Cristina Miuki Abe Jacob, Gabriela Blay, Gabriela Nunes Leal, Gabriella Erlacher Lube de Almeida, Heloisa Helena de Souza Marques, João Domingos Montoni da Silva, Joaquim Carlos Rodrigues, Juliana Caíres de Oliveira Achili Ferreira, Laila Pinto Coelho, Luciana dos Santos Henriques, Maria Helena Vaisbich, Nadia Emi Aikawa, Lucia Maria Arruda Campos, Victor Marques, Werther Brunow de Carvalho); Pediatric Rheumatology Unit, UNIFESP (Aline Nicácio Alencar, Daniela Gerent Petry Piotto, Giampaolo Faquin, Gleice Clemente Souza Russo, Luis Eduardo Coelho Andrade, Maria Odete Esteves Hilário, Melissa Mariti Fraga, Octavio Augusto Bedin Peracchi); Division of Rheumatology, FMUSP (Juliane A. Paupitz, Glauce Leão Lima); UNESP (Priscila R. Aoki, Juliana de Oliveira Sato, Silvana Paula Cardin, Taciana Albuquerque Pedrosa Fernandes); Irmandade da Santa Casa de Misericórdia de São Paulo (Andressa Guariento, Eunice Okuda, Maria Carolina dos Santos, Natali Weniger Spelling Gormenzano); State University of Campinas (Maraísa Centeville, Renata Barbosa, Simone Appenzeller); Ribeirão Preto Medical School - University of São Paulo (Francisco Hugo Gomes, Gecilmara Salviatto Pileggi, Paola Pontes Pinheiro, Virginia Paes Leme Ferriani); Hospital Infantil Darcy Vargas (Jonatas Libório, Luciana Tudech Pedro Paulo); Hospital Municipal Infantil Menino Jesus (Simone Lotufo, Tânia Caroline Monteiro de Castro) and Pontifical Catholic University of Sorocaba (Valéria C. Ramos).


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Received: September 26, 2016; Accepted: May 10, 2017

*Corresponding author. E-mail: (M.T. Terreri).

Conflicts of interest

The authors declare no conflicts of interest.

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