1. Department of Cardiology; Heart Hospital; London United Kingdom
2. National Institute of Health Research; University College London Hospitals Biomedical Research Centre; London United Kingdom
3. Hatter Cardiovascular Institute; Institute of Cardiovascular Science; London United Kingdom
4. Department of Cardiology; Leeds General Infirmary; Leeds United Kingdom
5. Department of Cardiology; Essex Cardiothoracic Center; Nethermayne, Basildon United Kingdom
6. London Department of Cardiology; Chest Hospital; London United Kingdom
7. Nuffield Health Trust; London United Kingdom
8. London School of Hygiene and Tropical Medicine; London United Kingdom
9. Cardiovascular and Metabolic Disorders Program; Duke-National University of Singapore; Singapore
10. National Heart Research Institute Singapore; National Heart Centre Singapore; Singapore