1. The Center for Health Equity Research and Promotion, Philadelphia Veterans Affairs Medical Center, University of Pennsylvania Department of Medicine, Division of Geriatrics and the Institute on Aging, Leonard Davis Institute of Healthcare Economics, Center for Bioethics, Philadelphia, Pennsylvania.
2. University of Pennsylvania Department of Medicine, Division of Geriatrics and the Institute on Aging, Leonard Davis Institute of Healthcare Economics, Center for Bioethics, Philadelphia, Pennsylvania.
3. University of Montana, Department of Philosophy and the Missoula Demonstration, Project, Missoula, Montana.