1. Division of Hematology/Oncology Department of Pediatrics University of Washington School of Medicine Seattle Washington USA
2. Division of Rheumatology Department of Pediatrics University of Washington School of Medicine Seattle Washington USA
3. Department of Health Systems and Population Health University of Washington School of Public Health Seattle Washington USA
4. Department of Epidemiology University of Washington School of Public Health Seattle Washington USA
5. Health Economics and Outcomes Research CHOICE Institute University of Washington School of Pharmacy Seattle Washington USA
6. Core for Biostatistics, Epidemiology, and Analytics in Research Seattle Children’s Research Institute Seattle Washington USA
7. Public Health Sciences Division Fred Hutchinson Cancer Center Seattle Washington USA
8. Dana‐Farber Cancer Institute Department of Psychosocial Oncology and Palliative Care Boston Massachusetts USA
9. Boston Children’s Hospital Pediatric Palliative Care Program Boston Massachusetts USA
10. Harvard Medical School Department of Pediatrics Boston Massachusetts USA