1. Centre for the AIDS Programme of Research in South Africa (CAPRISA), Doris Duke Medical Research Institute, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Congella, Durban, South Africa.
2. Zimnadi Zonke, Pietermaritzburg, South Africa.
3. Division of Medical Virology, Clinical Laboratory Sciences and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, Cape Town, South Africa.
4. National Health Laboratory Service, Durban, South Africa.
5. South African National Bioinformatics Institute, South African Medical Research Council Bioinformatics Unit, University of the Western Cape, Bellville, South Africa.
6. Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York.