1. Heart Centre and Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden
2. Clinic of Medicine, St. Olavs University Hospital, Trondheim, Norway
3. Department of Clinical and Molecular Medicine, NTNU – Norwegian University of Science and Technology, Trondheim, Norway
4. Department of Immunology and Transfusion Medicine, St. Olavs University Hospital, Trondheim, Norway
5. Department of Circulation and Medical Imaging, Faculty of Medicine, NTNU-Norwegian University of Science and Technology, Trondheim, Norway
6. Department of Cardiothoracic and Vascular Surgery, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
7. Clinic of Cardiothoracic Surgery, St. Olavs University Hospital, Trondheim, Norway