1. Division of Transplant Surgery, Department of Surgery, University of Nebraska Medical Center, Omaha, Nebraska, USA.
2. Division of Pediatric Palliative Care, Department of Pediatrics, Children's Hospital and Medical Center, Omaha, Nebraska, USA.
3. National Center for Ethics in Healthcare, Washington, DC, USA.
4. Courageous Parents Network, Newton, Massachusetts, USA.
5. Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA.
6. Department of Nursing Science, Professional Practice and Quality, Children's National Health System, Washington, DC, USA.
7. Department of Pediatrics, the George Washington University, Washington, DC, USA.