[1] Hannover Med Sch, Dept Neurol, Hannover, Germany
[2] Justus Liebig Univ Giessen, Univ Hosp Giessen & Marburg, Dept Neurol, Giessen, Germany
[3] Neurozentrum Klosterforst, Itzehoe, Germany
[4] Heinrich Heine Univ Duesseldorf, Univ Hosp Duesseldorf, Dept Neurol, Dusseldorf, Germany
[5] Univ Duisburg Essen, Univ Hosp Essen, Dept Neurol, Essen, Germany
[6] Ctr Translat Neuro & Behav Sci C TNBS, Essen, Germany