GD Katritsis (Presenting Author) – Imperial College Healthcare NHS Trust, London, UK; V Luther – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; M Koa-Wing – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; N Qureshi – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; Z Whinnett – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; PB Lim – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; A Chow – Barts Health NHS Trust, London, UK; S Agarwal – Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK; N Cortez-Diaz – Hospital De Santa Maria, Lisbon, Portugal; R Balasubramanian – Royal Bournemouth Hospital, Royal Bournemouth and Christchurch Hospitals NHS Foundation Trust, Bournemouth, UK; D Farewell – Essex Cardiothoracic Centre, Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, UK; NS Peters – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; N Linton – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK; P Kanagaratnam – Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK