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Hill LD, Kozarek RA, Kraemer SJ, Aye RW, Mercer CD, Low DE, Pope CE 2nd.Hill LD, et al. Among authors: kraemer sj.Gastrointest Endosc. 1996 Nov;44(5):541-7. doi: 10.1016/s0016-5107(96)70006-8.Gastrointest Endosc. 1996.PMID: 8934159