1. National Center for Ethics in Health Care, Veterans Affairs, Washington, DC, USA.
2. Department of Pediatrics and University of Nebraska Medical Center, Omaha, Nebraska, USA.
3. National Hospice and Palliative Care Organization, Alexandria, Virginia, USA.
4. Department of Pediatrics, Children's National Hospital, Washington, DC, USA.
5. Seasons Hospice and Palliative Care, AccentCare, Dallas, Texas, USA.
6. Greater Illinois Pediatric Palliative Care Coalition, Evanston, Illinois, USA.
7. College of Nursing, University of Tennessee, Knoxville, Knoxville, Tennessee, USA.
8. Department of Biostatistics, University of Nebraska Medical Center, Omaha, Nebraska, USA.
9. Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA.
10. Department of Pediatrics, The Ohio State University School of Medicine, Columbus, Ohio, USA.
11. College of Nursing and Health and Health Care Professions, Grand Canyon University, Phoenix, Arizona, USA.