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.
Clark BC, Manini TM, Ploutz-Snyder LL.Clark BC, et al.Spine (Phila Pa 1976). 2003 Feb 1;28(3):282-7. doi: 10.1097/01.BRS.0000042227.06526.A2.Spine (Phila Pa 1976). 2003.PMID: 12567032Clinical Trial.
Mayer JM, Graves JE, Clark BC, Formikell M, Ploutz-Snyder LL.Mayer JM, et al. Among authors: clark bc.Spine (Phila Pa 1976). 2005 Nov 15;30(22):2556-63. doi: 10.1097/01.brs.0000186321.24370.4b.Spine (Phila Pa 1976). 2005.PMID: 16284595Clinical Trial.