1. Institute of Pediatric Oncology/Support Group for Adolescents and Children With CancerFederal University of Sao PauloSao Paulo Brazil
2. National Cancer InstituteRio de Janeiro Brazil
3. Hospital de Pediatria SAMIC–Professor Dr. Juan P. GarrahanBuenos Aires Argentina
4. Barretos Cancer HospitalBarretos Brazil
5. Oswaldo Cruz Hospital, Oncohematology Pediatric CenterRecife Brazil
6. R. Gutierrez Children's HospitalBuenos Aires Argentina
7. Amaral Carvalho HospitalJau Brazil
8. Pereira Rossell HospitalMontevideo Uruguay
9. Clinical Hospital, Children's InstituteSao Paulo Brazil
10. Santa Casa de Misericordia de Sao PauloSao Paulo Brazil
11. Baleia HospitalSao Paulo Brazil
12. Hospital do Cancer do CearaFortaleza Brazil
13. Cancer Clinic, Bahia Society of OncologySalvador Brazil
14. Joana de Gusmão Children's HospitalSanta Catarina Brazil
15. Centro Infantil BoldriniSan Paulo Brazil
16. Childhood Cancer InstitutePorto Alegre Brazil
17. Sao Lucas HospitalPorto Alegre Brazil
18. Federal University of Sao PauloSao Paulo Brazil