1. Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
2. Department of Cardiology, Herlev and Gentofte University Hospital, Hellerup, Denmark
3. Department of Cardiology, Herlev and Gentofte University Hospital, Herlev, Denmark
4. Department of Cardiothoracic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
5. The Danish Heart Foundation, Copenhagen, Denmark
6. The National Institute of Public Health, University of Southern Denmark, Odense, Denmark
7. Department of Cardiology, Nordsjællands Hospital, Hillerød, Denmark