1. Clinical Laboratory Department, Institute of Human Virology-Nigeria, Abuja, Nigeria.
2. Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland.
3. Division of Haematology, National Health Laboratory Services (NHLS), Tygerberg Hospital, Cape Town, South Africa.
4. Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa.
5. Department of Medical Microbiology, Makerere University College of Health Sciences, Kampala, Uganda.
6. Clinical Laboratory Services-Wits Health Consortium, Johannesburg, South Africa.
7. National Human Genome Research Institute, National Institutes of Health and Human Services, Bethesda, Maryland.