1. Department of Internal Medicine, Haraldsplass Deaconess Hospital, Bergen, Norway
2. Department of Clinical Science, University of Bergen, Bergen, Norway
3. Department of Rheumatology, Haukeland University Hospital, Bergen, Norway
4. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
5. Department of Health and Social Science, Centre for Evidence-Based Practice, Western Norway University of Applied Science, Bergen, Norway
6. Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
7. Division of Mental and Physical Health, Norwegian Institute of Public Health, Bergen, Norway