NG Campbell (Presenting Author) – Manchester University NHS Foundation Trust, Manchester, UK; E Allen – London School of Hygiene and Tropical Medicine, London, UK; D Elbourne – London School of Hygiene and Tropical Medicine, London, UK; R Canter – London School of Hygiene and Tropical Medicine, London, UK; J Sturgess – London School of Hygiene and Tropical Medicine, London, UK; M Dodd – London School of Hygiene and Tropical Medicine, London, UK; J Sanders – St Bartholomew’s Hospital, London, UK; TCA Lobban – Arrhythmia Alliance, Chipping Norton, UK; HE Montgomery – University College London, London, UK; B O’Brien – St Bartholomew’s Hospital, London, UK