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.
Mylotte M, Egan-Mitchell B, Fottrell PF, McNicholl B, McCarthy CF.Mylotte M, et al. Among authors: fottrell pf.Br Med J. 1972 Oct 21;4(5833):144-6. doi: 10.1136/bmj.4.5833.144.Br Med J. 1972.PMID: 5078446Free PMC article.