University of Leicester, University of Leicester, The University of Western Australia, University of Leicester, Government of the United Kingdom - Barts Health NHS Trust, Government of the United Kingdom - Barts Health NHS Trust, University College London - Institute of Cardiovascular Science, University of Glasgow, University of Glasgow, University of Glasgow, Leeds Teaching Hospitals NHS Trust, University of Oxford, affiliation not provided to SSRN, King’s College London - School of Biomedical Engineering & Imaging Sciences, University College London, University College London, University College London, University of Leeds, Freeman Hospital, University of Glasgow, University of Edinburgh, University of Bristol, Aberdeen Royal Infirmary, University College London, University College London - Institute of Cardiovascular Science, Barts Heart Centre, St. Bartholomew's Hospital, University of Leeds, University of Glasgow, University of Glasgow - Robertson Institute of Biostatistics and Clinical Trials Unit, University of Oxford - Oxford Centre for Clinical Magnetic Resonance Research (OCMR), University of Oxford, University College London, University of Oxford, University of Edinburgh, University of Glasgow - Institute of Cardiovascular and Medical Sciences, University of Leicester and affiliation not provided to SSRN