1. Pediatric Hematology‐Oncology unitDepartment of PediatricsAdvanced Pediatrics CenterPostgraduate Institute of Medical Education and Research Chandigarh India
2. ITACI—Hematology‐Oncology Department of Instituto da Criança do Hospital das ClínicasSchool of Medicine, University of São Paulo São Paulo Brazil
3. Departments of Pediatrics, Pathology and MedicineMcMaster Children's Hospital Hamilton Ontario Canada
4. Division of Pediatric Hematology/Oncology/Stem Cell TransplantColumbia University Medical Center New York City New York