1. Department of Neurology, Medical Faculty, Heinrich-Heine University Düsseldorf, Moorenstrasse 5, 40225 Düsseldorf, Germany
2. Institute of Clinical Neuroscience & Medical Psychology, Medical Faculty, Heinrich-Heine University Düsseldorf, Germany
3. Department of Neurosurgery, Medical Faculty, Heinrich-Heine University Düsseldorf, Germany