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.
Cheung WY, Zhai R, Kulke MH, Heist RS, Asomaning K, Ma C, Wang Z, Su L, Lanuti M, Tanabe KK, Christiani DC, Liu G.Cheung WY, et al.Carcinogenesis. 2009 Aug;30(8):1363-7. doi: 10.1093/carcin/bgp126. Epub 2009 Jun 11.Carcinogenesis. 2009.PMID: 19520791Free PMC article.
Cheung WY, Liu G.Cheung WY, et al.Gastroenterol Clin North Am. 2009 Mar;38(1):75-91, viii. doi: 10.1016/j.gtc.2009.01.009.Gastroenterol Clin North Am. 2009.PMID: 19327568Review.