1. Department of Neurology, University Hospital of North Norway, Tromsø, Norway
2. Department of Psychology, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
3. Department of Neurology, Akershus University Hospital, Lørenskog, Norway
4. Department of Psychology, University of Oslo, Oslo, Norway
5. Department of Clinical Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
6. Institute of Clinical Medicine, Campus Ahus, University of Oslo, Oslo, Norway