1. From the National Clinician Scholars Program (M.L., D.G.), the Leonard Davis Institute of Health Economics (M.L., D.G., M.K.D.), the Division of General Internal Medicine (D.G.), and the Departments of Emergency Medicine (M.K.D.) and Biostatistics, Epidemiology, and Informatics (M.K.D.), Perelman School of Medicine at the University of Pennsylvania, and the Department of Medicine, Corporal Michael J. Crescenz Veterans Affairs Medical Center (M.L.) — both in Philadelphia.