1. Neurocenter, Cantonal Hospital Lucerne, Lucerne, Switzerland
2. Graduate School for Health Sciences, University of Bern, Bern, Switzerland
3. Department of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland
4. ARTORG Center for Biomedical Engineering Research, Gerontechnology & Rehabilitation Group, University of Bern, Bern, Switzerland
5. Department of Neurology, Inselspital, University Hospital Bern, Bern, Switzerland