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.
Kahn A, Kahn AL, Corinaldi CA, Benitez FL, Fox PC.Kahn A, et al. Among authors: benitez fl.Cal J Emerg Med. 2005 Jul;6(3):47-51.Cal J Emerg Med. 2005.PMID: 20847862Free PMC article.