1. From the Department of Neurology (M.T.M.), Center for Clinical Epidemiology and Biostatistics (D.J.W., J.R., C.C.B., B.G.C.), Leonard Davis Institute of Health Economics (D.J.W., C.C.B., B.G.C.), and Department of Emergency Medicine, School of Medicine (B.G.C.), University of Pennsylvania, Philadelphia; Department of Emergency Medicine, University of Southern California, Los Angeles (A.B.); School of Medicine, Duke University, Durham, NC (C.S.W.); Department of Epidemiology, School of Public Health,...