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.
Martin BI, Mirza SK, Flum DR, Wickizer TM, Heagerty PJ, Lenkoski AF, Deyo RA.Martin BI, et al. Among authors: mirza sk.Spine J. 2012 Feb;12(2):89-97. doi: 10.1016/j.spinee.2011.11.010. Epub 2011 Dec 21.Spine J. 2012.PMID: 22193055Free PMC article.