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.
Ono M, Goerler H, Boethig D, Westhoff-Bleck M, Hartung D, Breymann T.Ono M, et al.Ann Thorac Surg. 2007 Jun;83(6):2224-6. doi: 10.1016/j.athoracsur.2006.12.043.Ann Thorac Surg. 2007.PMID: 17532438