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.
Sieben JM, Vlaeyen JW, Portegijs PJ, Warmenhoven FC, Sint AG, Dautzenberg N, Romeijnders A, Arntz A, Knottnerus JA.Sieben JM, et al. Among authors: portegijs pj.Eur J Pain. 2009 Apr;13(4):412-8. doi: 10.1016/j.ejpain.2008.05.002. Epub 2008 Jun 17.Eur J Pain. 2009.PMID: 18562224
Sieben JM, Vlaeyen JW, Portegijs PJ, Verbunt JA, van Riet-Rutgers S, Kester AD, Von Korff M, Arntz A, Knottnerus JA.Sieben JM, et al. Among authors: portegijs pj.Pain. 2005 Sep;117(1-2):162-70. doi: 10.1016/j.pain.2005.06.002.Pain. 2005.PMID: 16099095
Norg RJ, van de Beek K, Portegijs PJ, van Schayck CP, Knottnerus JA.Norg RJ, et al. Among authors: portegijs pj.Br J Gen Pract. 2006 Dec;56(533):938-44.Br J Gen Pract. 2006.PMID: 17132382Free PMC article.Clinical Trial.
Schilte AF, Portegijs PJ, Blankenstein AH, van Der Horst HE, Latour MB, van Eijk JT, Knottnerus JA.Schilte AF, et al. Among authors: portegijs pj.BMJ. 2001 Jul 14;323(7304):86. doi: 10.1136/bmj.323.7304.86.BMJ. 2001.PMID: 11451784Free PMC article.Clinical Trial.
Schilte AF, Portegijs PJ, Blankenstein AH, Latour MB, van Eijk JT, Knottnerus JA.Schilte AF, et al. Among authors: portegijs pj.Scand J Prim Health Care. 2001 Dec;19(4):232-6. doi: 10.1080/02813430152706747.Scand J Prim Health Care. 2001.PMID: 11822646