1. Faculty of Medicine, University of Southampton, Tremona Road, Southampton SO16 6YD, UK
2. Wessex Cardiology Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
3. Department of Cardiology, Guy’s and St Thomas’ NHS Foundation Trust, London SE1 9RT, UK
4. Department of Cardiology, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne NE7 7DN, UK
5. NIHR Leicester Cardiovascular Biomedical Research Unit, University of Leicester, Glenfield Hospital, Leicester LE3 9QP, UK
6. Department of Cardiology, Blackpool Teaching Hospitals NHS Foundation Trust, Blackpool FY3 8NR, UK
7. Department of Cardiology, University Hospitals of South Manchester NHS Foundation Trust, Manchester M13 9WL, UK
8. Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, UK
9. Institute of Cardiovascular Medicine and Science, Liverpool Heart and Chest Hospital NHS Foundation Trust, Liverpool L14 3PE, UK
10. Imperial College London (Royal Brompton Hospital), Dovehouse Street, London SW3 6LY, UK