Antonio J Vallejo-Vaz1, Kausik K Ray2. 1. From the Cardiovascular Sciences Department, Cardiovascular and Cell Sciences Research Institute, St George's University of London, London, UK (A.J.V.V.); and Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK (K.K.R.). 2. From the Cardiovascular Sciences Department, Cardiovascular and Cell Sciences Research Institute, St George's University of London, London, UK (A.J.V.V.); and Department of Primary Care and Public Health, School of Public Health, Imperial College London, London, UK (K.K.R.). koshray@gmail.com.