1. Department of Neurology, Inselspital, Bern University Hospital University of Bern Bern Switzerland
2. Department of Neurosurgery, Inselspital, Bern University Hospital University of Bern Bern Switzerland
3. ARTORG Center for Biomedical Engineering Research University of Bern Bern Switzerland
4. Department of Neurology, Medical School University of Cyprus Nicosia Cyprus
5. Cantonal Medical Service, Department of Health of the Canton of Bern Bern Switzerland