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.
Barbour KA, Blumenthal JA.Barbour KA, et al. Among authors: blumenthal ja.Neurobiol Aging. 2005 Dec;26 Suppl 1:119-23. doi: 10.1016/j.neurobiolaging.2005.09.007. Epub 2005 Oct 11.Neurobiol Aging. 2005.PMID: 16223547Review.