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.
Clark BT, Protiva P, Nagar A, Imaeda A, Ciarleglio MM, Deng Y, Laine L.Clark BT, et al.Gastroenterology. 2016 Feb;150(2):396-405; quiz e14-5. doi: 10.1053/j.gastro.2015.09.041. Epub 2015 Oct 9.Gastroenterology. 2016.PMID: 26439436Free PMC article.
Imaeda A, Bender D, Fraenkel L.Imaeda A, et al.J Gen Intern Med. 2010 Jul;25(7):688-93. doi: 10.1007/s11606-010-1318-9. Epub 2010 Mar 23.J Gen Intern Med. 2010.PMID: 20309740Free PMC article.