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.
Guskiewicz KM, Valovich McLeod TC.Guskiewicz KM, et al. Among authors: valovich mcleod tc.PM R. 2011 Apr;3(4):353-64; quiz 364. doi: 10.1016/j.pmrj.2010.12.006.PM R. 2011.PMID: 21497322Review.