1. Medical Faculty, University of Zurich, Switzerland
2. Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Switzerland
3. Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Switzerland / Department of Neurology, Cantonal Hospital Lucerne, Switzerland
4. Department of Neurology, Cantonal Hospital St Gallen, Switzerland
5. Department of Neurology, University Hospital Basel, Switzerland
6. City of Winterthur, Switzerland
7. Faculty of Psychology, University of Basel, Switzerland
8. Department of Neurology, Kliniken Valens, Switzerland