1Department of Clinical Medicine, UiT—The Arctic University of Norway, pb 6124, 9291 Tromsø, Norway
2Division of Mental Health and Substance Abuse, University Hospital of North Norway, Tromsø, Norway
3Center for Clinical Documentation and Evaluation (SKDE), Tromsø, Norway
4Department of Community Medicine, UiT—The Arctic University of Norway, Tromsø, Norway
5Centre for Sami Health Research, UiT—The Arctic University of Norway, Tromsø, Norway
6Norwegian Institute of Public Health, Oslo, Norway
7Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders, Hamar, Norway
8Norwegian Medical Association, Oslo, Norway
9Institute of Clinical Medicine, University of Oslo, Oslo, Norway