1. Research Institute, Modum Bad, Vikersund, Norway
2. Norwegian Center for Violence and Traumatic Stress Studies, Oslo, Norway
3. Department of Psychiatry, Western University, London, Canada
4. Norwegian Centre for Mental Disorders Research (NORMENT), K. G. Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, and Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
5. National Advisory Unit on Substance Use Disorder Treatment, Oslo University Hospital, Oslo, Norway