1. Division of Global Health Equity, Brigham and Women's Hospital, Boston, Massachusetts, USA
2. Department of Epidemiology and Center for Communicable Disease Dynamics, Harvard School of Public Health, Boston, Massachusetts, USA
3. DST/NRF Centre of Excellence for Biomedical Tuberculosis Research/MRC Centre for Molecular and Cellular Biology, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
4. Department of Medicine, Edendale Hospital, Pietermaritzburg, University of KwaZulu-Natal, Durban, South Africa
5. Department of Mathematics, Imperial College London, London, United Kingdom
6. Department of Medicine, Norwich Medical School, University of East Anglia, Norwich, and Tuberculosis Section, Health Protection Agency, London, United Kingdom