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.
Spee LA, Lisman-Van Leeuwen Y, Benninga MA, Bierma-Zeinstra SM, Berger MY.Spee LA, et al.Scand J Prim Health Care. 2013 Dec;31(4):197-202. doi: 10.3109/02813432.2013.844405. Epub 2013 Oct 10.Scand J Prim Health Care. 2013.PMID: 24106821Free PMC article.
Lievense A, Bierma-Zeinstra S, Schouten B, Bohnen A, Verhaar J, Koes B.Lievense A, et al.Br J Gen Pract. 2005 Mar;55(512):199-204.Br J Gen Pract. 2005.PMID: 15808035Free PMC article.
van Middelkoop M, van Linschoten R, Berger MY, Koes BW, Bierma-Zeinstra SM.van Middelkoop M, et al.BMC Musculoskelet Disord. 2008 Mar 19;9:36. doi: 10.1186/1471-2474-9-36.BMC Musculoskelet Disord. 2008.PMID: 18366679Free PMC article.