1. Center for Health Equity Research and Promotion, Philadelphia Veterans Affairs Medical Center, Philadelphia, Pennsylvania2Robert Wood Johnson Foundation Clinical Scholars Program, University of Pennsylvania, Philadelphia3Leonard Davis Institute of Health
2. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia4Robert Wood Johnson Health and Society Scholars Program, University of Pennsylvania, Philadelphia
3. Division of General Internal Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
4. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia6Department of Health Policy and Management, the Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland