1. Department of Neurology; University Medical Center Groningen; University of Groningen; Groningen The Netherlands
2. Department of Radiology; University Medical Center Groningen; University of Groningen; Groningen The Netherlands
3. Department of Neurology; University Hospital Brussels; Centre for Neurosciences (C4N); Brussels Belgium
4. Department of Neurosurgery; University Medical Center Groningen; University of Groningen; Groningen The Netherlands