1. German Center for Neurodegenerative Diseases (DZNE) Munich Germany
2. Department of Neurology Technical University of Munich Munich Germany
3. Department of Neurology University of Basel Basel Switzerland
4. Department of Neurology Hannover Medical School Hannover Germany
5. Parkinson's disease and Movement Disorders Department, HYGEIA Hospital and First Department of Neurology, Aiginiteion Hospital National and Kapodistrian University of Athens Athens Greece
6. Neurology Clinic Philipps University Marburg Germany
7. Department of Psychology Ludwig‐Maximilians‐University Munich Germany
8. Department of Neurological Sciences Rush University Medical Center Chicago Illinois USA