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.
Fletcher RJ Jr, Acevedo MA, Reichert BE, Pias KE, Kitchens WM.Fletcher RJ Jr, et al.Proc Natl Acad Sci U S A. 2011 Nov 29;108(48):19282-7. doi: 10.1073/pnas.1107549108. Epub 2011 Nov 14.Proc Natl Acad Sci U S A. 2011.PMID: 22084081Free PMC article.