1. Division of Medical Virology, Department of Pathology and Institute of Infectious Diseases & Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
2. Center for HIV and STIs, National Institute for Communicable Disease, National Health Laboratory Service, Johannesburg, South Africa
3. SAMRC Gynaecological Cancer Research Centre, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa