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.
Heit HA, Gourlay DL.Heit HA, et al. Among authors: gourlay dl.Pain Med. 2009 Jul-Aug;10(5):784-6. doi: 10.1111/j.1526-4637.2009.00654.x. Epub 2009 Jun 25.Pain Med. 2009.PMID: 19558593No abstract available.