1. Department of Neurology Inselspital, University Hospital and University of Bern Bern Switzerland
2. Institute of Diagnostic and Interventional Neuroradiology Inselspital, University Hospital and University of Bern Bern Switzerland
3. Department of Neurology University Hospital and University of Basel Basel Switzerland
4. Department of Neurology Bogomolets National Medical University Kyiv Ukraine
5. Department of Diabetes, Endocrinology, Clinical Nutrition, and Metabolism Inselspital, University Hospital and University of Bern Bern Switzerland