1. Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada
2. Faculty of Medicine, University of Toronto, St. George Campus, Ontario, Canada
3. Service d'Hémato-Oncologie, Centre Hospitalier Universitaire de Sherbrooke, Hematology/Oncology, Centre Hospitalier Universitaire de Sherbrooke, Quebec, Canada
4. St. George Campus, Hematology/Oncology, Hospital Sainte-Justine, Montreal, Quebec, Canada
5. Division of Pediatric Hematology/Oncology, BC Children's Hospital, Vancouver, British Columbia, Canada
6. Division of Hematology/Oncology, Children's Hospital & Research Center Oakland, Oakland, California, USA
7. Division of Hematology/Oncology, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
8. Hematology/Oncology/Transplant Program, Alberta Children's Hospital, Calgary, Alberta, Canada
9. Division of Hematology/Oncology, Montreal Children's Hospital, Quebec, Canada
10. Division of Haematology/Oncology, Chedoke-McMaster Hospitals, Hamilton, Ontario, Canada
11. Department of Pediatrics, IWK Health Centre, Halifax, Nova Scotia, Canada
12. Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, Ontario, Canada