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.
Blackstock U, Stone MB.Blackstock U, et al. Among authors: stone mb.Ann Emerg Med. 2009 Jul;54(1):53-5. doi: 10.1016/j.annemergmed.2009.02.015. Epub 2009 Mar 25.Ann Emerg Med. 2009.PMID: 19321229No abstract available.