1. Hematology DepartmentEvandro Chagas National Institute of Infectious DiseasesOswaldo Cruz Foundation (FIOCRUZ) Rio de Janeiro Brazil
2. Pediatric Haematology‐Oncology ProgramResearch CentreNational Institute of Cancer (INCA) Rio de Janeiro Brazil
3. Division of Cancer Epidemiology and Clinical ResearchDepartment of PediatricsUniversity of Minnesota Minneapolis Minnesota
4. Cytogenetic DepartmentBone Marrow Transplantation Centre (CEMO)National Institute of Cancer (INCA) Rio de Janeiro Brazil
5. Hematology DepartmentNational Institute of Cancer (INCA) Rio de Janeiro Brazil
6. Laboratory of Clinical Research on STD/AIDSEvandro Chagas National Institute of Infectious Disease (INI)Oswaldo Cruz Foundation (FIOCRUZ) Rio de Janeiro Brazil