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.
van Tulder M, Malmivaara A, Esmail R, Koes B.van Tulder M, et al.Spine (Phila Pa 1976). 2000 Nov 1;25(21):2784-96. doi: 10.1097/00007632-200011010-00011.Spine (Phila Pa 1976). 2000.PMID: 11064524Review.
van der Roer N, van Tulder MW, Barendse JM, van Mechelen W, Franken WK, Ooms AC, de Vet HC.van der Roer N, et al. Among authors: van mechelen w, van tulder mw.BMC Musculoskelet Disord. 2004 Nov 23;5:45. doi: 10.1186/1471-2474-5-45.BMC Musculoskelet Disord. 2004.PMID: 15560843Free PMC article.