1. Department of Cardiology, Rigshospitalet Copenhagen University Hospital Copenhagen Denmark
2. Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
3. Department of Cardiothoracic Surgery Rigshospitalet, Copenhagen University Hospital Copenhagen Denmark
4. Department of Cardiology Odense University Hospital University of Southern Denmark Odense C Denmark
5. Department of Cardiology and Department of Cardiothoracic Surgery and Clinical Nursing Research Unit Aalborg University Hospital Aalborg Denmark
6. Department of Cardiac Thoracic and Vascular Surgery Odense University Hospital Odense C Denmark
7. Department of Clinical Research University of Southern Denmark Odense C Denmark
8. Department of Cardiology Aarhus University Hospital Aarhus N Denmark
9. Department of Cardiology Herlev and Gentofte University Hospital Hellerup Denmark