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.
Rafique S, Sterling EW, Nelson LM.Rafique S, et al. Among authors: nelson lm.Obstet Gynecol Clin North Am. 2012 Dec;39(4):567-86. doi: 10.1016/j.ogc.2012.09.007.Obstet Gynecol Clin North Am. 2012.PMID: 23182561Free PMC article.Review.
Bakalov VK, Vanderhoof VH, Bondy CA, Nelson LM.Bakalov VK, et al. Among authors: nelson lm.Hum Reprod. 2002 Aug;17(8):2096-100. doi: 10.1093/humrep/17.8.2096.Hum Reprod. 2002.PMID: 12151443