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.
McGinnis JL, Liu Q, Lavender CA, Devaraj A, McClory SP, Fredrick K, Weeks KM.McGinnis JL, et al.Proc Natl Acad Sci U S A. 2015 Feb 24;112(8):2425-30. doi: 10.1073/pnas.1411514112. Epub 2015 Feb 9.Proc Natl Acad Sci U S A. 2015.PMID: 25675474Free PMC article.