1. Department of Pediatrics, St Louis Children’s Hospital, St. Louis, Missouri;
2. Louis Dundas Centre for Children’s Palliative Care, Institute of Child Health, University College London, London, England;
3. National Cancer Institute, Center for Cancer Research, Pediatric Oncology Branch, Bethesda, Maryland;
4. Departments of Pediatric Oncology and Division of Population Sciences, and
5. Division of Pediatric Hematology/Oncology, and
6. Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts; and
7. Department of Medicine, Boston Children’s Hospital, Boston, Massachusetts