1. From the Department of Neurology, University Hospital Groningen, Groningen, Netherlands (J-W.E., G.A.S., A.W.T., J. De K.); Department of Neurology, Helsinki University Central Hospital, Helsinki, Finland (M.K.); Medicine and Therapeutics Department, Gardiner Institute, Western Infirmary, Glasgow, UK (K.R.L.); Abteilung Neurologie, Universität Essen, Essen, Germany (H.C.D.); Service Neurologie, CHU Hopital Michalon, Grenoble, France (M.H.); and Schering AG, SBU Therapeutics CV/CNS, Berlin, Germany ...