1. Graduate Program in Child and Adolescent Health; School of Medical Sciences, University of Campinas; Campinas Sao Paulo Brazil
2. Pediatric Oncology Department, Boldrini Children's Center; Campinas Sao Paulo Brazil
3. Medical Genetics Department; School of Medical Sciences, University of Campinas; Campinas Sao Paulo Brazil
4. Molecular Biology Laboratory, Boldrini Children's Center, Campinas; Campinas Sao Paulo Brazil
5. Department of Biostatistics; St Jude Children's Research Hospital; Memphis Tennessee
6. Department of Noncommunicable Disease Epidemiology; London School of Hygiene and Tropical Medicine; London United Kingdom
7. Data Center and Statistics; Hematology and Hemotherapy Department, University of Campinas; Campinas Sao Paulo Brazil
8. Department of Pathology; Boldrini Children's Center; Campinas Sao Paulo Brazil
9. Center for Pediatrics Research (CIPED); University of Campinas; Campinas Sao Paulo Brazil
10. Federal University of Parana and Pele Pequeno Principe Research Institute; Curitiba Parana Brazil
11. Department of Global Medicine; International Outreach Program, St Jude Children's Research Hospital; Memphis Tennessee
12. Department of Oncology; St Jude Children's Research Hospital; Memphis Tennessee
13. Department of Oncology and Hematology; Boldrini Children's Center; Campinas Sao Paulo Brazil
14. Department of Pediatrics; School of Medical Sciences, University of Campinas; Campinas Sao Paulo Brazil