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.
Rangel-Frausto MS, Pittet D, Costigan M, Hwang T, Davis CS, Wenzel RP.Rangel-Frausto MS, et al. Among authors: hwang t.JAMA. 1995 Jan 11;273(2):117-23.JAMA. 1995.PMID: 7799491