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.
Pawale A, El-Eshmawi A, Tang GH, Ellozy SH, Anyanwu AC.Pawale A, et al.Ann Thorac Surg. 2013 May;95(5):1784-7. doi: 10.1016/j.athoracsur.2012.09.087.Ann Thorac Surg. 2013.PMID: 23608261