1. From the Department of Emergency Medicine, Oregon Health Sciences University, Portland (A.L.B., N.C.M., M.D.); the Intermountain Injury Control Research Center, University of Utah School of Medicine, Salt Lake City (N.C.M.); the Department of Cardiology, University of Massachusetts School of Medicine, Worcester (R.G.); the Department of Health Services, University of Washington, Seattle (H.M.); the Division of Health and Kinesiology, Mississippi University for Women, Columbus (J.T.); New England...