Research Department, Innlandet Hospital Trust, Pb 104, 2381 Brumunddal, Norway; Faculty of Health and Social Science, Inland Norway University of Applied Sciences, Elverum, Norway. Electronic address: jaol-aas@online.no. Faculty of Health and Social Science, Inland Norway University of Applied Sciences, Elverum, Norway. Faculty of Health and Social Science, Inland Norway University of Applied Sciences, Elverum, Norway; Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders, Innlandet Hospital Trust, Ottestad, Norway. Council for Nutritional and Environmental Medicine, Toften 24, 8610 Mo i Rana, Norway. Electronic address: bjorklund@conem.org.