1. Department of Psychosocial Oncology and Palliative Care; Dana-Farber Cancer Institute; Boston Massachusetts
2. Dana-Farber/Boston Children's Cancer and Blood Disorders Center; Boston Massachusetts
3. Harvard Medical School; Boston Massachusetts
4. Center for Research and Implementation in Palliative Care; Institute for Clinical Effectiveness and Health Policy; Buenos Aires Argentina
5. Biostatistics Unit, Faculty of Health; Deakin University; Geelong Victoria Australia
6. Palliative Care Section, Texas Children's Hospital; Baylor School of Medicine; Houston Texas
7. Seattle Children's Hospital Cancer and Blood Disorders Center; Seattle Washington
8. Fred Hutchinson Cancer Research Center; Seattle Washington
9. Department of Pediatrics; University of Washington School of Medicine; Seattle Washington
10. Department of Pediatrics; The Children's Hospital of Philadelphia; Philadelphia Pennsylvania
11. Perelman School of Medicine at the University of Pennsylvania; Philadelphia Pennsylvania