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.
Mansfield CM, Kimler BF, Cheng CC, Abrahams IL, Podrebarac EG, Wittek PJ, Reddy EK.Mansfield CM, et al. Among authors: reddy ek.J Natl Med Assoc. 1980 Aug;72(8):765-9.J Natl Med Assoc. 1980.PMID: 7401185Free PMC article.