JJ Chow (Presenting Author) – Imperial College London, London, UK; KMW Leong – Imperial College London, London, UK; J Ormerod – Oxford University Hospitals, Oxford, UK; S Jones – Imperial College London, London, UK; M Koa-Wing – Imperial College Healthcare Trust, London, UK; D Lefroy – Imperial College Healthcare Trust, London, UK; PB Lim – Imperial College London, London, UK; NF Linton – Imperial College London, London, UK; FS Ng – Imperial College London, London, UK; NA Qureshi – Imperial College Healthcare Trust, London, UK; ZI Whinnett – Imperial College London, London, UK; NS Peters – Imperial College London, London, UK; P Kanagaratnam – Imperial College London, London, UK; A Varnava – Imperial College London, London, UK