1 Department of Neurology and Neuroscience, Medical Center - University of Freiburg, Medical Faculty University of Freiburg, Breisacher Straße 64 D-79106, Freiburg Germany.
2 Doctor's Office for Neurology and Psychiatry 79312, Emmendingen Germany.
3 Department of Stereotactic and Functional Neurosurgery, Medical Center - University of Freiburg, Medical Faculty University of Freiburg, Breisacher Straße 64, D-79106 Freiburg Germany.
4 Department of Neurology University Hospital Essen, Hufelandstraße 55, 45147 Essen Germany.