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.
Kamal A, Cheung R.Kamal A, et al. Among authors: cheung r.Dig Dis Sci. 2007 Oct;52(10):2564-9. doi: 10.1007/s10620-006-9668-1. Epub 2007 Apr 6.Dig Dis Sci. 2007.PMID: 17415636
Rothenberg M, Cheung R, Ahmed A.Rothenberg M, et al. Among authors: cheung r.Dig Dis Sci. 2009 Feb;54(2):218-21. doi: 10.1007/s10620-008-0628-9. Epub 2008 Nov 25.Dig Dis Sci. 2009.PMID: 19034647No abstract available.