1. Department of Rheumatology and Hiller Research Institute Medical Faculty University Hospital Heinrich‐Heine‐University Düsseldorf Germany
2. Department of General Zoology and Neurobiology Ruhr‐University Bochum Bochum Germany
3. Department of Neurology Alfried Krupp Hospital Essen Germany
4. Department of Neurology Medical Faculty University Hospital Heinrich‐Heine‐University Düsseldorf Germany