1. Department of Pediatrics Yale School of Medicine New Haven Connecticut USA
2. Yale Cancer Outcomes Public Policy and Effectiveness Research (COPPER) Center New Haven Connecticut USA
3. Department of Chronic Disease Epidemiology Yale School of Public Health New Haven Connecticut USA
4. Justin Michael Ingerman Center for Palliative Care, Children's Hospital of Philadelphia; Departments of Pediatrics, Medical Ethics, and Health Policy, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
5. Kaiser Permanente Washington Health Research Institute Seattle Washington USA
6. Department of Psychosocial Oncology and Palliative Care, Dana‐Farber Cancer Institute; Department of Pediatrics, Boston Children's Hospital Harvard Medical School Boston Massachusetts USA