1. Research Group, Department of Neurology, Schoen Clinic Bad Aibling, 83043 Bad Aibling, Germany
2. Institute for Medical Information Processing, Biometry, and Epidemiology (IBE), Faculty of Medicine, LMU Munich, Pettenkofer School of Public Health, 81377 Munich, Germany
3. German Center for Vertigo and Balance Disorders, University Hospital Grosshadern, Ludwig-Maximilians-Universität (LMU), 81377 Munich, Germany