1. University College London; Institute of Health Informatics; 222 Euston Road London UK NW1 2DA
2. Hamilton General Hospital; Division of Cardiology, Department of Medicine; 237 Barton Street East Hamilton ON Canada L8L 2X2
3. London School of Hygiene & Tropical Medicine; Department of Non-communicable Disease Epidemiology; Keppel Street London UK WC1E 7HT
4. London School of Hygiene and Tropical Medicine; Department of Epidemiology and Population Health; Keppel Street London UK WC1E 7HT
5. London School of Hygiene & Tropical Medicine; Department of Population Health; Room 134b Keppel Street London UK WC1E 7HT
6. The Heart Hospital, University College London Hospitals; Centre for Cardiology in the Young; 16-18 Westmoreland Street, London UK W1G 8PH
7. Foothills Medical Centre; Department of Cardiac Sciences, Cumming School of Medicine; C849 1403 29th Street NW Calgary Alberta Canada T2N 2T9