Institution: | Department of Neurology, University Duisburg-Essen, Essen,;Leopoldstr., Munich,;Clinics of the City of Cologne, Clinic of Neurology, Cologne and;Boehringer Ingelheim Pharma GmbH &Co. KG, Ingelheim, Germany, and;Department of Neurology, Albert Einstein College of Medicine, Bronx, New York, NY, USA |