1. Department of Pediatrics; Division of Haematology/Oncology; the Hospital for Sick Children; Toronto Canada
2. University of Toronto; Toronto Canada
3. Department of Psychosocial Oncology and Palliative Care; Dana-Farber Cancer Institute; Boston Massachusetts
4. Center for Outcomes and Policy Research Dana-Farber Cancer Institute; Boston Massachusetts
5. Department of Medicine; Boston Children's Hospital; Boston Massachusetts
6. Harvard Medical School; Boston Massachusetts