1 Infectious Diseases Unit, Department of Internal Medicine, Grey's Hospital, Pietermaritzburg, South Africa.
2 Centre for the AIDS Programme of Research in South Africa (CAPRISA), Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.
3 Division of Infectious Diseases, Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
4 National Institute of Communicable Diseases (NICD), Division of the National Health Laboratory Service (NHLS), Johannesburg, South Africa.
5 Unit for Infection Prevention and Control, Department of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
6 Division of Infectious Diseases, Department of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
7 Southern African HIV Clinicians Society, Cape Town, South Africa.
8 Infectious Diseases Unit, Department of Paediatrics and Child Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
9 Infectious Diseases Unit, Department of Internal Medicine, Faculty of Health Sciences, Dr George Mukari Academic Hospital, Sefako Makgatho Health Science University, Tshwane, South Africa.
10 Centre for the AIDS Programme of Research in South Africa (CAPRISA), Medical Research Council (MRC), Durban, South Africa.
11 Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.