1. Division of Pulmonology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
2. Task Applied Science, Bellville, South Africa
3. Division of Pulmonology, Department of Medicine, Groote Schuur Hospital and University of Cape Town Lung Institute, Cape Town, South Africa
4. Task Laboratory, Parow, South Africa
5. Department of Statistics, University of Pretoria, Pretoria, South Africa
6. TB Alliance, New York, New York, USA