1. Division of General Internal Medicine, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
2. Department of Medical Ethics and Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia
3. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia
4. Radcliffe Institute for Advanced Study, Harvard University, Cambridge, Massachusetts
5. Department of Government, Harvard University, Cambridge, Massachusetts
6. National Center for Ethics in Health Care, Veterans Health Administration, Washington, DC
7. Stanford Law School, Stanford University, Stanford, California
8. Department of Health Research and Policy, Stanford University School of Medicine, Stanford, California