1. Department of Neurology; University of Ulm; Ulm Germany
2. Department of Neurology; University of Hannover; Hannover Germany
3. Department of Neurology; Division for Neurodegenerative Diseases; Dresden University of Technology; Dresden Germany
4. German Center for Neurodegenerative Diseases (DZNE); Dresden Germany
5. Department of Neurology; University Medical Center Rostock; Rostock Germany
6. Department of Neurology; Evangelisches Krankenhaus Königin Elisabeth Herzberge; Berlin Germany
7. Department of Neurology; University of Halle; Halle Germany
8. Institute for Epidemiology and Medical Biometry; University of Ulm; Ulm Germany
9. CaritasKlinikum; Saarbrücken Germany