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.
Montenegro ML, Mateus-Vasconcelos EC, Rosa e Silva JC, Nogueira AA, Dos Reis FJ, Poli Neto OB.Montenegro ML, et al.Pain Med. 2010 Feb;11(2):224-8. doi: 10.1111/j.1526-4637.2009.00758.x. Epub 2009 Dec 9.Pain Med. 2010.PMID: 20002593