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.
Young NA, Szabó CÁ, Phelix CF, Flaherty DK, Balaram P, Foust-Yeoman KB, Collins CE, Kaas JH.Young NA, et al. Among authors: balaram p.Proc Natl Acad Sci U S A. 2013 Nov 19;110(47):19107-12. doi: 10.1073/pnas.1318894110. Epub 2013 Nov 4.Proc Natl Acad Sci U S A. 2013.PMID: 24191031Free PMC article.