1. Department of Neurology; University of Münster; Münster Germany
2. Department of Neurology; University of München; München Germany
3. Department of Prosthodontics and Dental Materials; University of Münster; Münster Germany
4. Department of Neurology; Isar-Amper-Klinikum München-Ost; Munich Germany
5. Department of Neurology; Krankenhaus Lindenbrunn; Coppenbrügge Germany
6. Department of Psychology; University of Münster; Münster Germany
7. Department of Psychology; University of Köln; Köln Germany