1. From the British Heart Foundation Centre (A.N.K., A.S., M.M., C.M.S.), Cardiovascular Division, Kings College London, London, United Kingdom; Department of Medicine (J.D.D., J.L.R., R.M., D.P.), Addenbrooke's Hospital, Cambridge, United Kingdom; Department of Surgery (G.T.J.), Dunedin School of Medicine, University of Otago, New Zealand; Department of Biochemistry (L.J.S.), University of Maastricht, Maastricht, Netherlands; and Multi-Imaging Centre (J.N.S.), Department of Anatomy, Cambridge, United...