1 TB Modelling Group, TB Centre, Centre for Mathematical Modelling of Infectious Diseases, Department of Epidemiology and Population Health, London, UK.
2 Department of Clinical Research, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK, Biomedical Research and Training Institute, Harare, Zimbabwe, Division of Infectious and Tropical Medicine, Medical Centre of the University of Munich, Munich, Germany.