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.
Flierman PA, Oberyé JJ, van der Hulst VP, de Blok S.Flierman PA, et al. Among authors: de blok s.BJOG. 2005 May;112(5):638-42. doi: 10.1111/j.1471-0528.2004.00504.x.BJOG. 2005.PMID: 15842290Clinical Trial.
Van Ee R, Hemrika DJ, De Blok S, Van Der Linden C, Lip H.Van Ee R, et al. Among authors: de blok s.Obstet Gynecol. 1996 Oct;88(4 Pt 1):568-72. doi: 10.1016/0029-7844(96)00222-0.Obstet Gynecol. 1996.PMID: 8841220Clinical Trial.
Robertson EA, de Blok S.Robertson EA, et al. Among authors: de blok s.J Am Assoc Gynecol Laparosc. 2000 Nov;7(4):523-5. doi: 10.1016/s1074-3804(05)60367-2.J Am Assoc Gynecol Laparosc. 2000.PMID: 11044505