An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
St John E, Mares D, Spear GT.St John E, et al. Among authors: spear gt.Curr HIV/AIDS Rep. 2007 Feb;4(1):22-8. doi: 10.1007/s11904-007-0004-y.Curr HIV/AIDS Rep. 2007.PMID: 17338857Review.
St John EP, Zariffard MR, Martinson JA, Simoes JA, Landay AL, Spear GT.St John EP, et al. Among authors: spear gt.Virology. 2009 Mar 1;385(1):22-7. doi: 10.1016/j.virol.2008.08.031. Epub 2008 Dec 30.Virology. 2009.PMID: 19117586Free PMC article.