1. Division of Anatomical Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
2. National Health Laboratory Services, Johannesburg, South Africa
3. Tshwane School for Business and Society, Tshwane University of Technology, Pretoria, South Africa
4. Global Surgery Division, Department of Surgery, University of Cape Town, Cape Town, South Africa
5. Lancet Laboratories, Richmond, Johannesburg, South Africa