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.
Blake DA, Farquhar CM, Johnson N, Proctor M.Blake DA, et al.Cochrane Database Syst Rev. 2007 Oct 17;(4):CD002118. doi: 10.1002/14651858.CD002118.pub3.Cochrane Database Syst Rev. 2007.PMID: 17943767Updated.Review.
van Rumste MM, Evers JL, Farquhar CM, Blake DA.van Rumste MM, et al. Among authors: blake da.Cochrane Database Syst Rev. 2000;(2):CD001301. doi: 10.1002/14651858.CD001301.Cochrane Database Syst Rev. 2000.PMID: 10796764Updated.Review.
Johnson N, Blake D, Farquhar C.Johnson N, et al. Among authors: blake d.Best Pract Res Clin Obstet Gynaecol. 2007 Feb;21(1):21-40. doi: 10.1016/j.bpobgyn.2006.09.008. Epub 2006 Nov 2.Best Pract Res Clin Obstet Gynaecol. 2007.PMID: 17084675Review.No abstract available.
Blake D, Proctor M, Johnson N, Olive D.Blake D, et al.Cochrane Database Syst Rev. 2005 Oct 19;(4):CD002118. doi: 10.1002/14651858.CD002118.pub2.Cochrane Database Syst Rev. 2005.PMID: 16235296Updated.Review.