1. Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Disease and Molecular Medicine, Cape Town, South Africa
2. Department of Medicine, University of Cape Town, Cape Town, South Africa
3. The Francis Crick Institute, London, UK
4. Faculty of Life Sciences, University College London, London, UK
5. Department of Medicine, Imperial College London, London, UK
6. Division of Cardiology, Department of Medicine, University of Cape Town, Cape Town, South Africa