1. Institute of Neuroscience and Physiology, University of Gothenburg, Sahlgrenska Academy, Sweden
2. Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden
3. Department of Neurosurgery, St. Olav’s University Hospital, Trondheim, Norway
4. Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim
5. Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
6. Department of Neuroscience, Neurology, Uppsala University, Sweden
7. Department of Radiation Science and Oncology, University Hospital, Umeå, Sweden
8. Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
9. Department of Neuroscience and Department of Medicine, Karolinska Institutet, Stockholm, Sweden
10. Department of Neurosurgery, Rigshospitalet, Copenhagen, Denmark
11. Department of Public Health and General Practice, Norwegian University of Science and Technology, Trondheim