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.
Ding WX, Li M, Chen X, Ni HM, Lin CW, Gao W, Lu B, Stolz DB, Clemens DL, Yin XM.Ding WX, et al.Gastroenterology. 2010 Nov;139(5):1740-52. doi: 10.1053/j.gastro.2010.07.041. Epub 2010 Jul 23.Gastroenterology. 2010.PMID: 20659474Free PMC article.