1. Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, Bern, Switzerland
2. Department of Cardiology, Zealand University Hospital, Sygehusvej 10, Roskilde, Denmark
3. Department of Cardiology, Rigshospitalet, Blegdamsvej 9, Copenhagen, Denmark
4. Department of Cardiology, Barts Heart Centre, Queen Mary University of London, London, UK
5. Division of Cardiology, University Hospital, Rue Gabrielle Perret-Gentil 4, Geneva, Switzerland
6. Department of Cardiology, Thoraxcentrum Twente, Medisch Spectrum Twente, Koningsplein 1, Enschede, the Netherlands
7. Department of Health Technology and Services Research, Technical Medical Centre, University of Twente, 7500 AE, Enschede, the Netherlands
8. Clinical Trials Unit, Institute of Social and Preventive Medicine, University of Bern, Mittelstrasse 43, Bern, Switzerland
9. Cardiology Clinic, Clinical Center of Serbia, Visegradska 26, Belgrade, Serbia
10. Department of Cardiology, Cardiocentro, Via Tesserete 46, Lugano, Switzerland
11. Center for Molecular Cardiology, Schlieren Campus, University of Zurich, Wagistrasse 12, Schlieren, Switzerland
12. Royal Brompton and Harefield Hospitals, Trust and Imperial College, London, UK
13. Cardiology Department, Rabin Medical Center, Petach Tikva, Tel Aviv University, Jabotinsky Street 39, Petah Tikwa, Israel
14. Cardiology Department, Triemlispital, Birmensdorferstrasse 497, Zurich, Switzerland