1. Institute for Cardiovascular Science, University College London, Chenies Mews, London, UK
2. Department of Cardiovascular Imaging, Barts Heart Centre, Barts Health NHS Trust, King George V Building, West Smithfield, London, UK
3. MRC London Institute of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London, UK
4. Department of Computing, Imperial College London, South Kensington Campus, 180 Queen's Gate, London, UK
5. National Heart and Lung Institute, Imperial College London, Du Cane Road, London, UK