1. From the Department of Neurology (J.B., Y.H., M.A., S.P., H.A., S.S., Z.P., W.H., T.S.), the Institute of Medical Biometry and Informatics (P.S.), and the Department of Neurosurgery (J.-O.N., A.U.), University of Heidelberg, Heidelberg, Germany; and the Department of Vascular Neurology, University of Tübingen, Tübeingen, Germany (S.P.); and the Department of Neurology, Frankfurt Hoechst Hospital, Frankfurt, Germany (T.S.).