1. Centre for Sami Health Research, Department of Community Medicine, UiT the Arctic University of Norway, Tromsø, Norway
2. Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
3. Norwegian University of Science and Technology (NTNU), Department of Obstetrics and Gynecology, Trondheim, Norway
4. Department of Mental Disorders, Norwegian Institute of Public Health, Oslo, Norway
5. Norwegian Centre for Addiction Research (SERAF), Institute of Clinical Medicine, University of Oslo, Oslo, Norway