1 Divisions of Hematology/Oncology and Bioethics, Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington.
2 Center for Clinical and Translational Research and Treuman Katz Center for Pediatric Bioethics, Seattle Children's Research Institute, Seattle, Washington.
3 Divisions of Palliative Care and Oncology, Department of Pediatrics, Children's Hospital and Medical Center, Omaha, Nebraska.
4 National Institutes of Health, National Cancer Institute, Center for Cancer Research, Bethesda, Maryland.