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.
Landi B, Palazzo L.Landi B, et al. Among authors: palazzo l.Best Pract Res Clin Gastroenterol. 2009;23(5):679-701. doi: 10.1016/j.bpg.2009.05.009.Best Pract Res Clin Gastroenterol. 2009.PMID: 19744633Review.