1. UCL Institute of Health Informatics Research, University College London , 222 Euston Rd, London NW1 2DA , UK
2. Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital , Liverpool , UK
3. Department of Clinical Medicine, Aalborg University , Aalborg , Denmark
4. UCL Institute of Cardiovascular Science University College London , London , UK
5. St Bartholomew’s Hospital, Barts Health NHS Trust , West Smithfield, London , UK