1. Faculty of Social Sciences, Unit of Health Sciences, Tampere University and PERLA (Tampere Centre for Childhood, Youth and Family Research), Tampere University, Tampere, Finland;
2. Department of Social Research, Faculty of Social Sciences, University of Turku, Turku, Finland;
3. Department of Population and Health, University of Cape Coast, Cape Coast, Ghana;
4. Department of Adolescent Psychiatry, Tampere University Hospital, Nokia, Finland