1. From the Departments of Psychiatry (C.S.) and Emergency Medicine (J.H.), University of Colorado School of Medicine, and the Departments of Community and Behavioral Health (C.S.) and Epidemiology (J.H.), Colorado School of Public Health, Aurora, and the Department of Emergency Medicine, Denver Health Medical Center, and the Colorado Social Emergency Medicine Collaborative, Denver (J.H.) — all in Colorado; and the American Heart Association, Dallas (C.S.).