1. Heart Valve Clinic & Echocardiography Laboratory, Barts Heart Centre, St Bartholomew's Hospital, West Smithfield, EC1A 7BE London, UK
2. William Harvey Research Institute, NIHR Barts Biomedical Research Centre, Queen Mary University London , Charterhouse Square, London EC1M 6BQ , UK
3. Department of Cardiac Technology, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University , Dammam, Kingdom of Saudi Arabia
4. Cardiothoracic Surgery, St Bartholomew’s Hospital , London , UK
5. Eastbourne District General Hospital , Eastbourne , UK
6. Barts Heart Centre, St Bartholomew’s Hospital, Barts Health NHS Trust , West Smithfield, EC1A 7BE London , UK
7. Health Data Research UK , Gibbs Building, 215 Euston Road, NW1 2BE London , UK
8. Alan Turing Institute , 96 Euston Road, NW1 2DB London , UK
9. Institute of Cardiovascular Sciences, UCL, 62 Huntley Street, WC1E 6DD London, UK