1. Centre for the Mathematical Modelling of Infectious Diseases, London School of Hygiene and Tropical Medicine, London, UK
2. Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
3. Malawi Liverpool Wellcome Trust Clinical Research Programme, Blantyre, Malawi
4. Aquarius Population Health, London, UK
5. Epidemiology and Demography Department, KEMRI-Wellcome Trust Research Programme, Centre for Geographic Medicine, Coast, Kilifi, Kenya
6. Institute of Infection and Global Health, Department of Clinical Infection, Microbiology, and Immunology, University of Liverpool, Liverpool, UK