1. From the Departments of Emergency Medicine (E.C.J., C.L.) and Neurology (J.B.), University of Cincinnati Medical Center, Cincinnati Ohio; the Department of Biometry and Epidemiology (B.C.T.), Medical College of South Carolina, Charleston; the College of Pharmacy (S.C.F.), University of Georgia, and the Department of Neurology, Medical College of Georgia, Augusta; and the Department of Neurology (S.R.L.), Mount Sinai School of Medicine, New York, NY.