| Affiliation: | 1. Division of Cardiovascular Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA;2. Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA;3. Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA;4. Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA;5. Department of Veterans Affairs Center for Health Equity and Research Promotion, Philadelphia Veterans Affairs Medical Center, Philadelphia, PA;6. Division of General Internal Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA;7. VA Palo Alto Health Care System, Palo Alto, CA |
