1. Chris Hani Baragwanath Hospital, Department of Internal Medicine, University of the Witwatersrand, Johannesburg, South Africa.
2. Perinatal HIV Research Unit (PHRU), South African Medical Research Council Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, University of the Witwatersrand, Johannesburg, South Africa.
3. NRF/DST Centre of Excellence in Biomedical TB Research, Johannesburg, South Africa.
4. Johns Hopkins University Centre for TB Research, Baltimore, Maryland.
5. Life Anncron Hospital, Klerksdorp, South Africa.
6. Klerksdorp Tshepong Hospital Complex, Department of Internal Medicine, University of the Witwatersrand, Klerksdorp, South Africa.