1. Kings College London British Heart Foundation Centre, School of Cardiovascular and Metabolic Medicine & Sciences, London, United Kingdom
2. Department of Cardiology, Epsom and St Helier University Hospitals Trust, London, United Kingdom
3. Biomedical Research and Training Institute, Harare, Zimbabwe
4. Department of Medical Physics and Imaging Sciences, Faculty of Medicine and Health Sciences, University of Zimbabwe
5. Department of Clinical Research, London School of Hygiene & Tropical Medicine, London, United Kingdom
6. Department of Non-communicable Disease, London School of Hygiene & Tropical Medicine, London, United Kingdom
7. Department of Cardiology, North Bristol NHS Trust, Bristol, London, United Kingdom
8. Department of Cardiology, Imperial College NHS Trust, London, United Kingdom