Affiliation: | (1) University Department of Clinical Neurosciences, Royal Free and University College Medical School, Rowland Hill Street, London NW3 2PF, UK Tel.: +44-171-794-0500, Fax: +44-171-431-1577, GB;(2) Neurologische Klinik, Heidelberger Lanstrasse 379, D-64297 Darmstadt, Germany, DE |