1. From the Stroke Units and Departments of Neurology, University Hospitals Basel (S.T.E., F.H., F.F., P.A.L.), Bern (M.A., K.N., H.P.M.), Geneva (L.S., R.S.), Lausanne (M.P.R., M.R., P.M.), and Zurich (D.G., H.S., R.W.B.), Cantonal Hospitals Aarau (G.S., H.J.H.), Thurgau (Muensterlingen; F.M.), St Gallen (B.W., B.T.), and the Department of Internal Medicine Triemli Hospital (Zurich; R.L.), Switzerland.