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.
López-Candales A, Cleary H, Edelman K.López-Candales A, et al. Among authors: cleary h.South Med J. 2011 Apr;104(4):282-4. doi: 10.1097/SMJ.0b013e31820bf5d2.South Med J. 2011.PMID: 21606699