1. World Health Organization Global Summary of the AIDS Epidemic 2010. Available from: http://www.who.int/hiv/data/2011_epi_core_en.png .
2. HIV in the United States; Available from: http://www.cdc.gov/hiv/resources/factsheets/us.htm .
3. Fauci AS, Lane HC. Chapter 189. Human Immunodeficiency Virus Disease: AIDS and Related Disorders. In: Longo DL, Fauci AS, Kasper DL, Hauser SL, Jameson JL, Loscalzo J, eds. Harrison's Principles of Internal Medicine. 18th ed. New York: McGraw-Hill; 2012. http://www.accessmedicine.com/content.aspx?aID=9123335 . Accessed March 22, 2012.
4. Flexner C. Chapter 59. Antiretroviral Agents and Treatment of HIV Infection. In: Brunton LL, Chabner BA, Knollmann BC, eds. Goodman & Gilman's The Pharmacological Basis of Therapeutics. 12nd ed. New York: McGraw-Hill; 2011. http://www.accessmedicine.com/content.aspx?aID=16679561 . Accessed March 22, 2012.
5. Centers for Disease Control and Prevention Morbidity and Mortality Weekly Report AIDS-Defining Conditions. Available from: http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5710a2.htm .