1. Department of Neurology Institute of Clinical Medicine Aalborg University Hospital Aalborg Denmark
2. Danish Center for Clinical Health Services Research Institute of Clinical Medicine Aalborg University and Aalborg University Hospital Aalborg Denmark
3. Department of Neurosurgery Aalborg University Hospital Aalborg Denmark
4. Department of Neurology Aalborg University Hospital Aalborg Denmark
5. Department of Neurosurgery Institute of Clinical Medicine Aalborg University Hospital Aalborg Denmark