1. Department of Neurology, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
2. Department of Neurology, St. Josef-Hospital, Katholische Kliniken Ruhrhalbinsel, Contilia Gruppe, Essen, Germany
3. Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany
4. Department of Neurology, St. Joseph Krankenhaus Berlin-Weißensee, Berlin, Germany