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.
de Maat MP, Bladbjerg EM, Kluft C, Winkler UH, Rekers H, Skouby SO, Jespersen J.de Maat MP, et al. Among authors: skouby so.Hum Reprod. 2006 Jun;21(6):1473-6. doi: 10.1093/humrep/del015. Epub 2006 Feb 14.Hum Reprod. 2006.PMID: 16478760