1. Department of Global Public Health and Primary Care, University of Bergen, Norway
2. Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Italy
3. The Norwegian Multiple Sclerosis Competence Center, Department of Neurology, Haukeland University Hospital, Norway
4. Department of Clinical Medicine, University of Bergen, Norway
5. Kronstad DPS, Division of Psychiatry, Haukeland University Hospital, Norway
6. Division of Mental and Physical Health, Norwegian Institute of Public Health, Norway
7. Section for Psychiatry, Department of Clinical Medicine, Faculty of Medicine and Dentistry, University of Bergen, Norway