A. John Camm, MD, FRCP, FESC, FACCProfessor of Clinical Cardiology and Head, Department of Cardiological Sciences, St. George’s Hospital Medical School, London Marek Malik, PhD, MD, DSc, FACC, FECSProfessor of Cardiac Electrophysiology, Department of Cardiological Sciences, St. George’s Hospital Medical School, LondonYee Guan Yap, BMedSci, MBBS, MRCPBritish Heart Foundation Research Fellow in Cardiology, Department of Cardiological Sciences, St. George’s Hospital Medical School, London