1. Heart Centre, Clinical Physiology Department of Surgical and Perioperative Sciences Umeå University Umeå Sweden
2. Medicine Department of Public Health and Clinical Medicine Umeå University Umeå Sweden
3. Heart Centre, Cardiology Department of Public Health and Clinical Medicine Umeå University Umeå Sweden
4. Diagnostic Radiology Department of Radiation Sciences Umeå University Umeå Sweden