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.
Alexander I, Paul ID, Caul EO.Alexander I, et al. Among authors: caul eo.Genitourin Med. 1985 Aug;61(4):252-4. doi: 10.1136/sti.61.4.252.Genitourin Med. 1985.PMID: 3894213Free PMC article.
Caul EO, Paul I, Herring AJ, Horner PJ, Crowley T.Caul EO, et al.Commun Dis Public Health. 2000 Sep;3(3):220.Commun Dis Public Health. 2000.PMID: 11014043No abstract available.