@techreport{Williams2000,
author = {Williams, B. and Gilgen, D. and Campbell, C. and MacPhail, C. and Van Dam, C.J. and Ballard, R.C. and Taljaard, D.},
title= {The natural history of HIV / AIDS in South Africa: A biomedical and social survey in Carletonville},
year = {2000},
publisher = {Council for Scientific and Industrial Research},
address = {Johannesburg},
}