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.
Claudius I, Baraff LJ.Claudius I, et al. Among authors: baraff lj.Emerg Med Clin North Am. 2010 Feb;28(1):67-84, vii-viii. doi: 10.1016/j.emc.2009.09.002.Emerg Med Clin North Am. 2010.PMID: 19945599