1Department of Neurology, University of Ulm, Oberer Eselsberg 45, 89081 Ulm, Germany
2Department of Neurology, University of Würzburg, Würzburg, Germany
3Department of Neurology, University of Bonn, Bonn, Germany
4Department for Psychiatry and Psychotherapy, Faculty of Medicine, Medical Center – University of Freiburg, University of Freiburg, Freiburg, Germany
5Institute of Epidemiology and Medical Biometry, University of Ulm, Ulm, Germany
© The Author(s) 2020
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