1. London Centre for Nanotechnology, Faculty of Mathematics and Physical Sciences, University College London, London, United Kingdom
2. National Public Health Speciality Training Programme, South West, United Kingdom
3. Division of Infection and Immunity, University College London, London, United Kingdom
4. Africa Health Research Institute, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
5. Department of Virology, University College London Hospitals NHS Foundation Trust, London, United Kingdom
6. Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
7. Division of Medicine, University College London, London, United Kingdom