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.
Janssen-Caspers HA, Kruitwagen RF, Wladimiroff JW, de Jong FH, Drogendijk AC.Janssen-Caspers HA, et al. Among authors: kruitwagen rf.Fertil Steril. 1986 Nov;46(5):823-7. doi: 10.1016/s0015-0282(16)49819-5.Fertil Steril. 1986.PMID: 3536603Free article.