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.
Cundy T, Gamble G, Manuel A, Townend K, Roberts A.Cundy T, et al.Aust N Z J Obstet Gynaecol. 1993 Aug;33(3):249-54. doi: 10.1111/j.1479-828x.1993.tb02078.x.Aust N Z J Obstet Gynaecol. 1993.PMID: 8304885
McBride C, Roberts A, Knox A, Cundy T.McBride C, et al.BMJ. 1993 Mar 27;306(6881):858. doi: 10.1136/bmj.306.6881.858.BMJ. 1993.PMID: 8490395Free PMC article.No abstract available.