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.
Díaz-Fontdevila M, Bustos-Obregón E, Fornés M.Díaz-Fontdevila M, et al.Andrologia. 1992 Sep-Oct;24(5):279-83. doi: 10.1111/j.1439-0272.1992.tb02653.x.Andrologia. 1992.PMID: 1530154