[1] Department of Nursing and Health Promotion, Oslo Metropolitan University, Andrea Arntzens Hus, Pilestredet 32, Oslo
[2] Oslo Municipality, Grünerløkka Child and Family Health Center, Mailundveien 23, Oslo
[3] Regional Centre for Child and Adolescent Mental Health, Eastern and Southern Norway (RBUP), PO Box 4623, Nydalen, Oslo
[4] Institute of Nursing and Health Sciences, Department of Nursing and Social Sciences, University of South-Eastern Norway, PO Box 235, Kongsberg
[5] Division of General Gynaecology and Obstetrics, Oslo University Hospital, PO Box 4950, Nydalen