1. Department of Internal Medicine
2. Tiervlei Trial Centre, Karl Bremer Hospital, Bellville, South Africa
3. Department of Molecular Biology and Human Genetics and MRC Centre for Molecular and Cellular Biology, DST/NRF Centre of Excellence for Biomedical TB Research
4. Division of Clinical Pharmacology, University of Cape Town, Cape Town, South Africa
5. Biostatistics Unit of the South African Medical Research Council, Cape Town, South Africa
6. Department of Paediatrics and Child Health, Faculty of Health Sciences, University of Stellenbosch, Tygerberg, South Africa