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.
Benoit SR, Fleming R, Philis-Tsimikas A, Ji M.Benoit SR, et al.BMC Public Health. 2005 Apr 17;5:36. doi: 10.1186/1471-2458-5-36.BMC Public Health. 2005.PMID: 15833140Free PMC article.