[1] Univ Cambridge, Sch Clin Med, Cambridge CB2 0QQ, England
[2] Royal Papworth Hosp, Dept Radiol, Cambridge CB2 0QQ, England
[3] Univ Edinburgh, British Heart Fdn Ctr Cardiovasc Sci, Edinburgh EH8 9YL, Midlothian, Scotland
[4] Univ Edinburgh, Edinburgh Imaging Fac QMRI, Edinburgh EH8 9YL, Midlothian, Scotland
[5] Univ Cambridge, Dept Publ Hlth & Primary Care, British Heart Fdn Cardiovasc Epidemiol Unit, Cambridge CB2 0QQ, England
[6] Univ Cambridge, British Heart Fdn Ctr Res Excellence, Cambridge CB2 0QQ, England
[7] Wellcome Genome Campus & Univ Cambridge, Hlth Data Res UK Cambridge, Cambridge CB2 0QQ, England
[8] NIHR Cambridge Biomed Res Ctr, Cambridge CB2 0QQ, England