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.
Lundgren F; Swedish External Support Study (SWEXSUS).Lundgren F, et al.Ann Vasc Surg. 2013 Nov;27(8):1124-33. doi: 10.1016/j.avsg.2013.02.009. Epub 2013 Aug 20.Ann Vasc Surg. 2013.PMID: 23972437Clinical Trial.