1. Department of Chemical Pathology and National Health Laboratory Service, Tshwane Academic Division, Faculty of Health Sciences, University of Pretoria, South Africa
2. Department of Forensic Medicine, Faculty of Health Sciences, University of Pretoria, South Africa
3. Department of Haematology and National Health Laboratory Service, Tshwane Academic Division, Faculty of Health Sciences, University of Pretoria, South Africa
4. Division of Chemical Pathology, University of Cape Town, South Africa