1. From Baylor Heart and Vascular Institute, Baylor University Medical Center, Dallas (M.P.); Imperial College (M.P.) and the Department of Medical Statistics, London School of Hygiene and Tropical Medicine (S.J.P.), London, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow (N.S.), and the Department of Cardiovascular Sciences, University of Leicester and National Institute for Health Research Biomedical Research Centre, Glenfield Hospital, Leicester (I.S.) — all in the United...