1. UNAIDS/WHO: AIDS epidemic update: November 19, 2007. Available at http://www.unaids.org/en/knowledgecenter/HIVdata/epiupdate . Accessed February 13, 2008.
2. Centers for Disease Control and Prevention (CDC): HIV transmission among black women—North Carolina, 2004. MMWR Morb Mortal Wkly Rep 2005, 54:89–94.
3. Joint United Nations Program on HIV/AIDS (UNAIDS): Report on the global AIDS epidemic. Available at http://www.unaids.org/en/knowledgecenter/HIVdata/GlobalReport/2006 . Accessed September 22, 2007.
4. De Cock KM, Mbori-Ngacha D, Marum E: Shadow on the continent: public health and HIV/AIDS in Africa in the 21st century. Lancet 2002, 360:67–72.
5. Centers for Disease Control and Prevention: HIV/AIDS statistics and surveillance. Available at http://www.cdc.gov/topics/surveillance . Accessed October 6, 2007.