1 Department of Neurology, University of Ulm, Oberer Eselsberg 45, 89081, Ulm, Germany.
2 Department of Neurology, University of Würzburg, Würzburg, Germany.
3 Department of Neurology, University of Bonn, Bonn, Germany.
4 Department for Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center - University of Freiburg, University of Freiburg, Freiburg, Germany.
5 Institute of Epidemiology and Medical Biometry, University of Ulm, Ulm, Germany.
6 Department of Neurology, University of Ulm, Oberer Eselsberg 45, 89081, Ulm, Germany. [email protected].