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Seo DW, Kim MH, Lee SK, Myung SJ, Kang GH, Ha HK, Suh DJ, Min YI.Seo DW, et al. Among authors: kang gh.Gastrointest Endosc. 1999 Feb;49(2):204-9. doi: 10.1016/s0016-5107(99)70487-6.Gastrointest Endosc. 1999.PMID: 9925699Clinical Trial.
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