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.
Lancaster CA, Gold KJ, Flynn HA, Yoo H, Marcus SM, Davis MM.Lancaster CA, et al. Among authors: gold kj.Am J Obstet Gynecol. 2010 Jan;202(1):5-14. doi: 10.1016/j.ajog.2009.09.007.Am J Obstet Gynecol. 2010.PMID: 20096252Free PMC article.Review.