1. Pharmacogenomics and Drug Metabolism Research Group, Division of Human Genetics, Department of Pathology and Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
2. Division of Medical Biochemistry, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
3. Department of Archaeology, Faculty of Science, University of Cape Town, Cape Town, South Africa.
4. Division of Social Sciences, School of Archaeology, University of Oxford, Oxford, United Kingdom.