1. aDepartment of Surgery, Massachusetts General Hospital
2. bData Science and Biostatistics Unit, Department of Biomedical and Health Informatics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
3. cDepartment of Psychosocial Oncology and Palliative Care, Dana Farber Cancer Institute
4. dDepartment of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
5. ePediatric Advanced Care Team and Department of Medical Ethics, Children’s Hospital of Philadelphia, the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania