1. Institute of Health and Care Sciences Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Department of Neurosurgery Sahlgrenska University Hospital Gothenburg Sweden
3. Department of Neurology Sahlgrenska University Hospital Gothenburg Sweden
4. Department of Clinical Neuroscience Institute of Neuroscience and Physiology Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
5. Department of Medicine Neurology Uppsala University Uppsala Sweden