1. Department of Cardiovascular Sciences, British Heart Foundation Centre of Research Excellence, School of Cardiovascular Medicine, Faculty of Life Sciences and Medicine, King’s College London, The James Black Centre , 125 Coldharbour Lane, London SE5 9NU , UK
2. Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Cardiology Unit, University of Palermo, University Hospital P. Giaccone , Palermo , Italy
3. Cardiology Department, King’s College Hospital NHS Foundation Trust , London , UK