1. Department of Neurology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland
2. Graduate School for Health Sciences, University of Bern, Bern, Switzerland
3. Department of Brain Repair and Rehabilitation, Stroke Research Group, UCL Queen Square Institute of Neurology, London, UK
4. Institute of Diagnostic and Interventional Neuroradiology, Inselspital University Hospital Bern, Switzerland