1. Department of Cardiology Copenhagen University Hospital, Rigshospitalet Copenhagen Denmark
2. Department of Cardiology Oslo University Hospital, Rikshospitalet Oslo Norway
3. K.G. Jebsen Cardiac Research Centre and Center for Heart Failure Research Oslo Norway
4. Department of Cardiology Sahlgrenska University Hospital Gothenburg Sweden
5. Department of Cardiology Aarhus University Hospital Aarhus Denmark
6. The Section for Heart Failure and Valvular Disease Skåne University Hospital Lund Sweden
7. Department of Clinical Sciences Lund Cardiology Lund University Lund Sweden
8. Transplant Institute Sahlgrenska University Hospital Gothenburg Sweden
9. Faculty of Medicine University of Oslo Oslo Norway
10. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark