1. Department of Epidemiology and Public Health, University College London, London WC1E 6BT, UK.
2. Clinicum, University of Helsinki, Helsinki FIN-00014, Finland.
3. Institute of Cardiovascular Science, University College London, London WC1E 6BT, UK.
4. UCL British Heart Foundation Research Accelerator, London WC1E 6BT, UK.
5. UCL National Institute of Health Research Biomedical Research Centre, London W1T 7DN, UK.
6. Health Data Research UK, London NW1 2BE, UK.
7. Broad Institute, Massachusetts Institute of Technology and Harvard University, Cambridge, MA 02142, USA.