1. Department of Pediatrics, UCSF Benioff Children's Hospital, San Francisco, California.
2. Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts.
3. Center for Patient Safety and Quality Research, Program for Patient Safety and Quality and Division of Adolescent and Young Adult Medicine, Boston Children's Hospital, Boston, Massachusetts.
4. Department of Cardiology, Boston Children's Hospital, Boston, Massachusetts.
5. Department of Cardiac Surgery, Boston Children's Hospital, Boston, Massachusetts.