1. Department of Child Health Evaluative Sciences, Hospital for Sick Children, Toronto, Ontario, Canada.
2. Department of Anesthesia and Pain Medicine, Hospital for Sick Children, Toronto, Ontario, Canada.
3. Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Ontario, Canada.
4. Division of Hematology/Oncology, Hospital for Sick Children, Toronto, Ontario, Canada.
5. Pediatric Oncology Group of Ontario, Toronto, Ontario, Canada.
6. Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
7. Mount Sinai Hospital, Toronto, Ontario, Canada.
8. Adolescent and Young Adult Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada.