1. HIV/AIDS, STIs & TB Program, Human Sciences Research Council, Durban, South Africa
2. School of Life & Medical Sciences, University College London, London, UK
3. Malawi Liverpool Wellcome Trust Clinical Research Program, Blantyre, Helse Nord TB Initiative, College of Medicine, Chichiri, Blantyre, Malawi
4. Helse Nord TB Initiative, College of Medicine, Chichiri, Blantyre, Malawi
5. Malawi Liverpool Wellcome Trust Clinical Research Program, Blantyre, Liverpool School of Tropical Medicine, Liverpool, UK
6. Malawi Liverpool Wellcome Trust Clinical Research Program, Blantyre, London School of Hygiene and Tropical Medicine, London, UK