1. Diakonhjemmet Hospital, Vinderen DPS, Oslo, Norway
2. Department of Social Work and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
3. Institute of Psychology, University of Oslo, Norway
4. Institute of Psychiatry, University of Oslo, Norway
5. The Research Institute, Norwegian Medical Association, Oslo, Norway
6. Institute of Health Management and Health Economics, University of Oslo, Norway