S. Ahmed, T. Lutalo, M. Wawer, D. Serwadda i inni. HIV incidence and sexually transmitted disease prevalence associated with condom use: a population study in Rakai, Uganda. „AIDS”. 15 (16), s. 2171–2179, Nov 2001. PMID: 11684937.
B. Varghese, J.E. Maher, T.A. Peterman, B.M. Branson i inni. Reducing the risk of sexual HIV transmission: quantifying the per-act risk for HIV on the basis of choice of partner, sex act, and condom use. „Sex Transm Dis”. 29 (1), s. 38–43, Jan 2002. PMID: 11773877.