(en) Ng, BE, Butler, LM, Horvath, T (March 16, 2011). Population-based biomedical sexually transmitted infection control interventions for reducing HIV infection. Cochrane database of systematic reviews (Online) (3): CD001220. PMID21412869. DOI: 10.1002/14651858.CD001220.pub3.
(en) Boily MC, Baggaley RF, Wang L, Masse B, White RG, Hayes RJ, Alary M (February 2009). Heterosexual risk of HIV-1 infection per sexual act: systematic review and meta-analysis of observational studies. The Lancet Infectious Diseases9 (2): 118–129. PMID19179227. DOI: 10.1016/S1473-3099(09)70021-0.
(en) Dosekun, O, Fox, J (July 2010). An overview of the relative risks of different sexual behaviours on HIV transmission. Current Opinion in HIV and AIDS5 (4): 291–7. PMID20543603. DOI: 10.1097/COH.0b013e32833a88a3.
(en) Ng, BE, Butler, LM, Horvath, T (March 16, 2011). Population-based biomedical sexually transmitted infection control interventions for reducing HIV infection. Cochrane database of systematic reviews (Online) (3): CD001220. PMID21412869. DOI: 10.1002/14651858.CD001220.pub3.
(en) Boily MC, Baggaley RF, Wang L, Masse B, White RG, Hayes RJ, Alary M (February 2009). Heterosexual risk of HIV-1 infection per sexual act: systematic review and meta-analysis of observational studies. The Lancet Infectious Diseases9 (2): 118–129. PMID19179227. DOI: 10.1016/S1473-3099(09)70021-0.
(en) Dosekun, O, Fox, J (July 2010). An overview of the relative risks of different sexual behaviours on HIV transmission. Current Opinion in HIV and AIDS5 (4): 291–7. PMID20543603. DOI: 10.1097/COH.0b013e32833a88a3.