1. Department of Pediatrics, University of California, San Francisco, San Francisco, California, USA.
2. Divisions of Emergency Medicine and Department of Pediatrics, UCSF Benioff Children's Hospital Oakland, Oakland, California, USA.
3. Division of Pediatric Critical Care, Benioff Children's Hospital San Francisco, University of California, San Francisco, San Francisco, California, USA.
4. Division of Pediatric Bioethics and Palliative Care, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington, USA.
5. Divisions of Oncology, Department of Pediatrics, UCSF Benioff Children's Hospital Oakland, Oakland, California, USA.
6. Division of Pediatric Bioethics and Palliative Care, Department of Pediatrics, Center for Clinical and Translational Research, Seattle Children's Research Institute, University of Washington School of Medicine, Seattle, Washington, USA.