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.
Takken T, Van Brussel M, Engelbert RH, Van Der Net J, Kuis W, Helders PJ.Takken T, et al. Among authors: helders pj.Eur J Phys Rehabil Med. 2008 Sep;44(3):287-97.Eur J Phys Rehabil Med. 2008.PMID: 18762738Free article.Review.
Engelbert RH, van der Net J, Schoenmakers MA, Keessen W, Helders PJ.Engelbert RH, et al. Among authors: helders pj.Ned Tijdschr Geneeskd. 1993 Aug 7;137(32):1614-6.Ned Tijdschr Geneeskd. 1993.PMID: 8366964Dutch.
van der Net J, Vos RC, Engelbert RH, van den Berg MH, Helders PJ, Takken T.van der Net J, et al. Among authors: helders pj.Haemophilia. 2006 Sep;12(5):494-9. doi: 10.1111/j.1365-2516.2006.01307.x.Haemophilia. 2006.PMID: 16919079
Helders PJ, Engelbert RH, Gulmans VA, van der Net J.Helders PJ, et al.Disabil Rehabil. 2001 Jul 20;23(11):497-500. doi: 10.1080/09638280010029840.Disabil Rehabil. 2001.PMID: 11437202