1. Department of Medical Microbiology and the Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Anzio Road, Observatory 7925, South Africa.
2. Tuberculosis Research Unit, Case Western Reserve University, Cleveland, United States of America (USA).
3. Department of Global Health and Social Medicine, Harvard Medical School and Partners In Health, Boston, USA.
4. Treatment Action Group, New York, USA.
5. Khayelitsha Programme, Médecins Sans Frontières, Cape Town, South Africa.
6. Southern African Medical Unit, Médecins Sans Frontières, Johannesburg, South Africa.