1. From the Department of Neurology (W.D.Z., M.B.P., M.M., P.H.J., N.A.M.), University of Maryland School of Medicine; Program in Trauma (W.D.Z., M.B.P., M.M., N.A.M.), R Adams Cowley Shock Trauma Hospital; Health Sciences and Human Services Library (E.F.G.), University of Maryland; and Department of Neurology (R.M.E.S.), Johns Hopkins School of Medicine, Baltimore, MD.