1. Dermatology Department; Nelson R Mandela School of Medicine; University of KwaZulu-Natal; Durban South Africa
2. Dermatology Department; Walter Sisulu School of Medicine; University of Transkei; Umtata South Africa
3. Department of Medicine; Nelson R Mandela School of Medicine; University of KwaZulu-Natal; Durban South Africa
4. Centre for the AIDS Programme of Research in South Africa (CAPRISA); Nelson R Mandela School of Medicine; University of KwaZulu-Natal; Durban South Africa
5. Department of Public Health Medicine; School of Nursing and Public Health; College of Health Sciences; University of KwaZulu-Natal; Durban South Africa
6. School of Clinical Medicine; University of KwaZulu-Natal; Durban South Africa