1. Center for Clinical Documentation and Evaluation (SKDE) Tromsø Norway
2. Norwegian Medical Association Oslo Norway
3. Department of Clinical Medicine UiT – The Arctic University of Norway Tromsø Norway
4. Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders Innlandet Hospital Trust Hamar Norway
5. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
6. Icahn School of Medicine Mt Sinai Hospital New York NY USA
7. Institute of Clinical Medicine University of Oslo Oslo Norway
8. Institute of Health and Society University of Oslo Oslo Norway
9. Department of Mental Disorders Norwegian Institute of Public Health Oslo Norway
10. Department of Psychology PROMENTA Research Center University of Oslo Oslo Norway
11. PharmacoEpidemiology and Drug Safety Research Group School of Pharmacy University of Oslo Oslo Norway
12. Department of Community Medicine UiT – The Arctic University of Norway Tromsø Norway
13. Department of Community Medicine Centre for Sami Health Research UiT – The Arctic University of Norway Tromsø Norway
14. Division of Mental Health and Substance Abuse University Hospital of North Norway Tromsø Norway