1. Department of Health, Social and Welfare Studies, Faculty of Health and Social Sciences, University of South-Eastern Norway (USN), Kongsberg, Norway;
2. Department of Public Health Science, Faculty of Landscape and Society, Norwegian University of Life Sciences (NMBU), Ås, Norway;
3. Faculty of Health and Social Work Studies, Østfold University College, Halden, Norway;
4. Department of Mental Health Research and Development, Vestre Viken Hospital Trust, Drammen, Norway