1. Department of Molecular Medicine and Haematology National Health Laboratory Service (NHLS)University of the Witwatersrand (WITS) Johannesburg South Africa
2. Department of Haematology National Health Laboratory Service (NHLS)University of Pretoria Pretoria South Africa
3. Department of Immunology National Health Laboratory Service (NHLS)University of the Witwatersrand (WITS) Johannesburg South Africa