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Sung JJ, Lin SR, Ching JY, Zhou LY, To KF, Wang RT, Leung WK, Ng EK, Lau JY, Lee YT, Yeung CK, Chao W, Chung SC.Sung JJ, et al. Among authors: ching jy.Gastroenterology. 2000 Jul;119(1):7-14. doi: 10.1053/gast.2000.8550.Gastroenterology. 2000.PMID: 10889149Clinical Trial.