1. From New York Presbyterian Hospital and Columbia University Medical Center (G.W.S.), the Cardiovascular Research Foundation (G.W.S., P.G., O.D., I.K., R.M.), and Mount Sinai Medical Center (J. Puskas, R.M.), New York; the Cleveland Clinic Foundation, Cleveland (J.F.S.); the International Centre for Circulatory Health, National Heart and Lung Institute, Imperial College London (P.W.S.), and London School of Hygiene and Tropical Medicine (S.J.P.), London, Oxford University Hospitals, Oxford (D.P.T., A....