L Leung (Presenting Author) – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; A Bajpai – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; A Li – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; M Sohal – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; Z Zuberi – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; J Louis-Auguste – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; J Hayat – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK; MM Gallagher – St. George’s Hospital NHS Foundation Trust; St. George’s University of London, London, UK