1. Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
2. Penn Home Care and Hospice Services, BalaCynwyd, Pennsylvania.
3. Kansas City Hospice and Palliative Care, Kansas City, Missouri.
4. Hospice and Community Care of Lancaster County, Lancaster, Pennsylvania.
5. School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin.
6. The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
7. Hospice by the Bay, Larkspur, California.
8. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.