1. Faculty of Health Studies, Sogn og Fjordane University Collage, Førde, Norway
2. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
3. Department of Surgery, Førde Central Hospital, Førde, Norway
4. Department of Surgey, Voss Hospital, Helse Bergen Trust, Voss, Norway
5. Centre for Health Research, Førde Hospital Trust, Førde, Norway
6. Department of Community and Family Medicine, Duke University School of Medicine, Durham, NC, USA
7. Quality of Life Consulting, PLLC, Durham, NC, USA