1. From the Section of Cardiovascular Medicine (H.M.K., E.E.D.) and Robert Wood Johnson Clinical Scholars Program (H.M.K.), Department of Internal Medicine, and School of Public Health (H.M.K., M.M.D.), Yale University School of Medicine, New Haven, CT; Center for Outcomes Research and Evaluation (H.M.K., Z.L., E.E.D., J.A.M.), Yale-New Haven Hospital, New Haven, CT; Centers for Medicare & Medicaid Services (L.F.H., M.T.R.), Baltimore, MD; Department of Emergency Medicine (M.T.R.), George...