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.
Akkersdijk WL, van Bergeijk JD, van Egmond T, Mulder CJ, van Berge Henegouwen GP, van der Werken C, van Erpecum KJ.Akkersdijk WL, et al.Endoscopy. 1995 May;27(4):313-6. doi: 10.1055/s-2007-1005699.Endoscopy. 1995.PMID: 7555937Clinical Trial.