1. Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
2. Penn Cardiovascular Outcomes, Quality, & Evaluative Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
3. The Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia
4. Perelman School of Medicine, University of Pennsylvania, Philadelphia
5. Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
6. Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
7. Harvard Medical School, Boston, Massachusetts
8. Division of General Internal Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia
9. Center for Health Equity Research and Promotion, Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania