1. From the Department of Neurosurgery, St Olav’s Hospital, Trondheim University Hospital, Norway (T.B.M., A.V.)
2. Department of Neuromedicine and Movement Science (A.V), Norwegian University of Science and Technology, Trondheim, Norway
3. Department of Public Health and Nursing (P.R.R., M.S.S.), Norwegian University of Science and Technology, Trondheim, Norway
4. Department of Cancer and Palliative Care, Nordland Hospital Bodø, Norway (M.S.S.)
5. Department of Clinical Medicine, University of Tromsø, Norway (M.S.S.).