N Ali (Presenting Author) – National Heart and Lung Institute, Imperial College London, London; AA Miyazawa – National Heart and Lung Institute, Imperial College London, London; AD Arnold – National Heart and Lung Institute, Imperial College London, London; P Kanagratnam – National Heart and Lung Institute, Imperial College London, London; NS Peters – National Heart and Lung Institute, Imperial College London, London; N Qureshi – National Heart and Lung Institute, Imperial College London, London; B Lim – National Heart and Lung Institute, Imperial College London, London; F Ng – National Heart and Lung Institute, Imperial College London, London; N Linton – National Heart and Lung Institute, Imperial College London, London; D Lefroy – National Heart and Lung Institute, Imperial College London, London; A Muthumala – St Bartholomews Hospital and North Middlesex University Hospital, London; MA Tanner – St Richards Hospital, University Hospitals Sussex NHS Foundation Trust, London; D Keene – National Heart and Lung Institute, Imperial College London, London; GD Cole – National Heart and Lung Institute, Imperial College London, London; D Francis – National Heart and Lung Institute, Imperial College London, London; ZA Whinnett – Imperial College London, London