1. Department of Medicine, University of Washington, Seattle, Washington, USA.
2. American Academy of Hospice and Palliative Medicine, Chicago, Illinois, USA.
3. Cedars-Sinai Medical Center, Los Angeles, California, USA.
4. Institute for Healthcare Improvement, Cambridge, Massachusetts, USA.
5. Memorial Sloan-Kettering Cancer Center, New York, New York, USA.
6. National Institutes of Health, Bethesda, Maryland, USA.
7. School of Nursing, University of Maryland, Baltimore, Maryland, USA.