1. Department of Medicine, Leonard Davis Institute of Health Economics, University of Pennsylvania,
2. Department of Medicine, Leonard Davis Institute of Health Economics, and the Department of Health Care System, Wharton School, University of Pennsylvania
3. Department of Psychiatry, University of Pennsylvania
4. Division of Urology, Department of Surgery, University of Pennsylvania
5. Division of Urology, Department of Surgery, University of Pennsylvania, and the Philadelphia VA Medical Center Philadelphia, Pennsylvania