1. Chris Hani Baragwanath Academic Hospital Histopathology Laboratory, National Health Laboratory Services and Department of Anatomical Pathology, School of Pathology, University of the Witwatersrand
2. National Health Laboratory Services, Charlotte Maxeke Johannesburg Academic Hospital, Department of Molecular Medicine and Haematology, School of Pathology, University of the Witwatersrand
3. Department of Molecular Medicine and Hematology, School of Pathology, University of the Witwatersrand, Johannesburg and the National Health Laboratory Services, Johannesburg, South Africa