1. Department of Forensic Sciences; Oslo University Hospital; Oslo Norway
2. Institute of Clinical Medicine, University of Oslo; Oslo Norway
3. Center for Psychopharmacology; Diakonhjemmet Hospital; Oslo Norway
4. Department of Public Health, Experimental and Forensic Medicine; University of Pavia; Pavia Italy
5. Trasoppklinikken; Oslo Norway
6. Department of Addiction Treatment; Oslo University Hospital; Oslo Norway
7. Norwegian Institute of Public Health; Oslo Norway