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Liu YY, Yeh CN, Lee HL, Wang SY, Tsai CY, Lin CC, Chao TC, Yeh TS, Jan YY.Liu YY, et al.World J Gastroenterol. 2009 May 21;15(19):2376-80. doi: 10.3748/wjg.15.2376.World J Gastroenterol. 2009.PMID: 19452582Free PMC article.Clinical Trial.