1. Department of Clinical Pharmacology, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe.
2. Department of Biological Sciences, Faculty of Science and Engineering, Bindura University of Science Education, Bindura, Zimbabwe.
3. Pharmacogenomics and Drug Metabolism Research Group, Division of Human Genetics, Department of Pathology, Institute of Infectious Diseases and Molecular Medicine (IIDMM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
4. Department of Medicine, Faculty of Medicine and Health Sciences, University of Zimbabwe, Harare, Zimbabwe.
5. Department of Drug Metabolism and Pharmacokinetics (DMPK), African Institute of Biomedical Sciences and Technology (AiBST), Harare, Zimbabwe.
6. Division of Cardiology, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.