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.
Regev A, Schiff ER.Regev A, et al. Among authors: schiff er.Gastroenterol Clin North Am. 2001 Jun;30(2):547-63, x-xi. doi: 10.1016/s0889-8553(05)70195-3.Gastroenterol Clin North Am. 2001.PMID: 11432305Review.