1. Department of Laboratory Medicine University Hospital of North Norway Tromsø 9038 Norway
2. Department of Community Medicine UiT the Arctic University of Norway Tromsø Norway
3. Department of Cardiology Akershus University Hospital Lørenskog Norway
4. Institute of Clinical Medicine, Cardiovascular Research Group, Campus Ahus University of Oslo Oslo Norway
5. Institute of Clinical Medicine UiT the Arctic University of Norway Tromsø Norway