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.
Dalton VK, Jacobson PD, Konig M, Holman PP Jr.Dalton VK, et al.J Health Care Poor Underserved. 2009 Feb;20(1):98-106. doi: 10.1353/hpu.0.0100.J Health Care Poor Underserved. 2009.PMID: 19202250Free PMC article.
Dempsey A, Cohn L, Dalton V, Ruffin M.Dempsey A, et al.Vaccine. 2010 Jan 22;28(4):989-95. doi: 10.1016/j.vaccine.2009.10.133. Epub 2009 Nov 17.Vaccine. 2010.PMID: 19925899Free PMC article.