1. From the Department of Neurology (J.C.K., A.V.T., D.Z.W.), The University of Illinois College of Medicine at Peoria and the Illinois Neurological Institute at OSF Saint Francis Medical Center, Peoria, Ill; and the Department of Neurology (D.E.N.-T.), and Department of Emergency Medicine (Y.H.H.), The Johns Hopkins University School of Medicine, Baltimore, Md.