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.
Lovick TA, Brown LA, Key BJ.Lovick TA, et al.Exp Physiol. 2005 Jan;90(1):131-40. doi: 10.1113/expphysiol.2004.028811. Epub 2004 Oct 4.Exp Physiol. 2005.PMID: 15466455Free article.