1. Centers for Disease Control and Prevention: HIV/AIDS Surveillance Report, 2006, vol 18. Atlanta, GA: Centers for Disease Control and Prevention, US Department of Health and Human Services; 2008.
2. Phillips AN, Lee CA, Elford J, et al.: More rapid progression to AIDS in older HIV-infected people: the role of CD4+ T-cell counts. J Acquir Immune Defic Syndr 1991, 4:970–975.
3. Rothenberg R, Woelfel M, Stoneburner R, et al.: Survival with the acquired immunodeficiency syndrome. Experience with 5833 cases in New York City. N Engl J Med 1987, 317:1297–1302.
4. Balslev U, Monforte AD, Stergiou G, et al.: Influence of age on rates of new AIDS-defining diseases and survival in 6546 AIDS patients. Scand J Infect Dis 1997, 29:337–343.
5. Centers for Disease Control and Prevention: AIDS among persons aged > or = 50 years—United States, 1991–1996. MMWR Morb Mortal Wkly Rep 1998, 47:21–27.