1. Department of Cardiology Division of Cardiothoracic and Respiratory Medicine University Hospital of North Norway Tromso Norway
2. Department of Clinical Medicine UiT Arctic University of Norway Tromso Norway
3. International Research Competence Centre Northern State Medical University Arkhangelsk Russia
4. Department of Community Medicine UiT Arctic University of Norway Tromso Norway
5. Research Institute of Internal and Preventive Medicine Branch of the Institute of Cytology and Genetics Siberian Branch of the Russian Academy of Sciences Novosibirsk Russian Federation
6. Novosibirsk State Medical University Russian Ministry of Health Novosibirsk Russian Federation
7. Department of Cardiology Akershus University Hospital Lørenskog Norway
8. Institute of Clinical Medicine, Cardiovascular Research Group, Campus Ahus University of Oslo Tromso Norway