1. Division of Haematology/Oncology, Department of Paediatrics, The Hospital for Sick Children and Department of Paediatrics, University of Toronto, Toronto, ON, Canada
2. Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB, Canada
3. Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
4. Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
5. Department of Pediatric Hematology/Oncology, UT Southwestern Medical Center, Dallas, TX
6. Department of Pediatrics, McMaster University, Hamilton, ON, Canada