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.
Oshinsky ML, Murphy AL, Hekierski H Jr, Cooper M, Simon BJ.Oshinsky ML, et al.Pain. 2014 May;155(5):1037-1042. doi: 10.1016/j.pain.2014.02.009. Epub 2014 Feb 14.Pain. 2014.PMID: 24530613Free PMC article.