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.
Back P, Braeckman BP, Matthijssens F.Back P, et al. Among authors: braeckman bp.Oxid Med Cell Longev. 2012;2012:608478. doi: 10.1155/2012/608478. Epub 2012 Aug 15.Oxid Med Cell Longev. 2012.PMID: 22966416Free PMC article.Review.