1. Department of Neurology, Akershus University Hospital, Lørenskog, Norway
2. Department of General Practice, HELSAM, University of Oslo, Oslo, Norway
3. FORMI, Oslo University Hospital, Oslo, Norway
4. Research Centre, Akershus University Hospital, Lørenskog, Norway
5. Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway