1 Pediatric Rheumatology Unit, Children's Institute, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av. Dr. Eneas Carvalho Aguiar, 647 - Cerqueira César, Sao Paulo, SP, 05403-000, Brazil. [email protected].
2 Pediatric Rheumatology Unit, Universidade Federal de Sao Paulo, Sao Paulo, Brazil.
3 Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil.
4 Pediatric Rheumatology Division, Sao Paulo State University (UNESP), Botucatu, Sao Paulo, Brazil.