1. Department of Cardiology, Helsinki University Hospital, Heart and Lung Center, Helsinki, Finland;
2. Department of Clinical Radiology, Kuopio University Hospital, Kuopio, Finland;
3. Heart Center, Kuopio University Hospital, Kuopio, Finland;
4. HUS Medical Imaging Center, Radiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland;
5. Institute of Clinical Medicine, Internal Medicine and Kuopio University Hospital, Kuopio, Finland