1. Research Unit for General Practice, NORCE Norwegian Research Centre, Bergen, Norway;
2. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway;
3. The Research Unit and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark;
4. Health, Care and Social Services, County Governor of Agder, Arendal, Norway;
5. National Centre of Rural Medicine, Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway