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.
Barnsley L, Lord SM, Wallis BJ, Bogduk N.Barnsley L, et al. Among authors: lord sm.Spine (Phila Pa 1976). 1995 Jan 1;20(1):20-5; discussion 26. doi: 10.1097/00007632-199501000-00004.Spine (Phila Pa 1976). 1995.PMID: 7709275
Barnsley L, Lord S, Bogduk N.Barnsley L, et al. Among authors: lord s.Pain. 1993 Oct;55(1):99-106. doi: 10.1016/0304-3959(93)90189-V.Pain. 1993.PMID: 8278215Clinical Trial.
Wallis BJ, Lord SM, Barnsley L, Bogduk N.Wallis BJ, et al. Among authors: lord sm.Spine (Phila Pa 1976). 1996 Apr 1;21(7):804-10. doi: 10.1097/00007632-199604010-00006.Spine (Phila Pa 1976). 1996.PMID: 8779010