1. From the Department of Neurology (A.P.J., C.L.K., K.L., L.R.W., M.D.H., M.T.S., B.J.M., M.R., B.A.G., B.T.J., T.G.J.), Department of Neurosurgery (A.P.J., B.J.M., B.A.G., B.T.J., T.G.J.), Department of Critical Care Medicine (B.J.M.), and Department of Emergency Medicine (F.X.G., C.M.-G.), University of Pittsburgh Medical Center, PA; Baptist Neurological Institute, Jacksonville, FL (A.A.); and Barrow Neurological Institute, Phoenix, AZ (A.F.D.).