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Jin X, Yang YD, Li YM.Jin X, et al. Among authors: yang yd.World J Gastroenterol. 2008 Apr 21;14(15):2303-7. doi: 10.3748/wjg.14.2303.World J Gastroenterol. 2008.PMID: 18416454Free PMC article.Review.
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Xiang Z, Chen YP, Ma KF, Ye YF, Zheng L, Yang YD, Li YM, Jin X.Xiang Z, et al. Among authors: yang yd.BMC Gastroenterol. 2013 Sep 23;13:140. doi: 10.1186/1471-230X-13-140.BMC Gastroenterol. 2013.PMID: 24053454Free PMC article.Review.