1. Faculty of Health Studies, Western Norway University of Applied Sciences, Førde, Norway
2. Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
3. Department of Clinical Science, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway
4. Department of Cardiology, Stavanger University Hospital, Stavanger, Norway
5. Norwegian Registry for Invasive Cardiology, Bergen, Norway
6. School of Health and Welfare, Jönköping University, Jönköping, Sweden