1. Department of Cardiology, Royal Brompton Hospital, Imperial College, Sydney Street, London SW3 6NP, UK
2. Alberta Heart Institute, Edmonton, Canada
3. King’s College Hospital, London, UK
4. La Sapienza University, Rome, Italy
5. CIBERCV, University Hospital Ramón y Cajal, Madrid, Spain
6. Cliniques Universitaires St-Luc, Université Catholique de Louvain, Brussels, Belgium
7. Hammersmith Hospital, Imperial College, London, UK
8. Oslo University Hospital and University of Oslo, Norway
9. University of Liege Hospital, GIGA Cardiovascular Science, Heart Valve Clinic, Imaging Cardiology, Liege, Belgium