1 Seattle Children's Hospital, Cancer and Blood Disorders Center, University of Washington, Seattle, Washington, USA; Department of Pediatrics, Treuman Katz Center for Pediatric Bioethics, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA.
2 Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, Massachusetts, USA; Department of Medicine, Boston Children's Hospital, Boston, Massachusetts, USA. Electronic address: [email protected].