1. DSI-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town 7505, South Africa
2. Centre for Bioinformatics and Computational Biology, Stellenbosch University, Stellenbosch 7602, South Africa
3. Department of Anthropology, Center for Population Biology and the Genome Center, University of California Davis, Davis, CA 95616, USA