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.
Hamilton MJ, Milne BT, Walker RS, Brown JH.Hamilton MJ, et al. Among authors: walker rs.Proc Natl Acad Sci U S A. 2007 Mar 13;104(11):4765-9. doi: 10.1073/pnas.0611197104. Epub 2007 Mar 6.Proc Natl Acad Sci U S A. 2007.PMID: 17360598Free PMC article.
Hamilton MJ, Burger O, DeLong JP, Walker RS, Moses ME, Brown JH.Hamilton MJ, et al. Among authors: walker rs.Proc Natl Acad Sci U S A. 2009 Jul 28;106(30):12255-60. doi: 10.1073/pnas.0905708106. Epub 2009 Jul 10.Proc Natl Acad Sci U S A. 2009.PMID: 19592508Free PMC article.
Burger O, Walker R, Hamilton MJ.Burger O, et al.Proc Biol Sci. 2010 Mar 7;277(1682):773-7. doi: 10.1098/rspb.2009.1450. Epub 2009 Nov 4.Proc Biol Sci. 2010.PMID: 19889696Free PMC article.