Ozlem Ozkul-Wermester1, Romain Lefaucheur2, Bertrand Bourre1. 1. Department of Neurology, Rouen University Hospital and University of Rouen, Rouen, France. 2. Department of Neurology, Rouen University Hospital and University of Rouen, Rouen, France. Electronic address: romain.lefaucheur@chu-rouen.fr.