1. Department of Heart Disease, University Hospital of North Norway, Sykehusvegen 38, Tromsø 9013, Norway
2. Cardiovascular Research Group, Institute of Clinical Medicine, University of Tromsø-The Arctic University of Norway, Hansine Hansens veg 18, Tromsø 9019, Norway
3. Department of Radiology, University Hospital of North Norway, Sykehusvegen 38, Tromsø 9013, Norway
4. Department of Cardiology, Akerhus University Hospital, Sykehusveien 25, Lørenskog 1478, Norway
5. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Sykehusveien 25, Lørenskog 1478, Norway