1. Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
2. ThoraxCenter, Erasmus Medical Center, Rotterdam, The Netherlands
3. NHLI, Imperial College London, London, UK
4. Department of Cardiology, General Military Hospital of Athens, Athens, Greece
5. Barts Heart Centre, Barts Health NHS Trust, London, UK
6. Institute of Cardiovascular Sciences, University College London, London, UK