1. Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
2. Cardiothoracic Directorate, Oxford University Hospitals National Health System (NHS) Foundation Trust, Oxford, UK.
3. Oxford Centre of Research Excellence, British Heart Foundation, Oxford, UK.
4. Department of Cardiothoracic Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
5. Department of Radiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
6. 1st Department of Cardiology, Athens University Medical School, Athens, Greece.
7. Medizinische Klinik 2, Universitätsklinikum Erlangen, Erlangen, Germany.
8. Oxford Biomedical Research Centre, National Institute of Health Research, Oxford, UK.