1. Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylania
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. Department of Medicine, University of Washington School of Medicine, Seattle
5. The Wharton School of Business, University of Pennsylvania, Philadelphia
6. Division of General Internal Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia