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Hassan C, Repici A, Sharma P, Correale L, Zullo A, Bretthauer M, Senore C, Spada C, Bellisario C, Bhandari P, Rex DK.Hassan C, et al. Among authors: rex dk.Gut. 2016 May;65(5):806-20. doi: 10.1136/gutjnl-2014-308481. Epub 2015 Feb 13.Gut. 2016.PMID: 25681402Review.
Rex DK, Alikhan M, Cummings O, Ulbright TM.Rex DK, et al.Gastrointest Endosc. 1999 Oct;50(4):468-74. doi: 10.1016/s0016-5107(99)70067-2.Gastrointest Endosc. 1999.PMID: 10502165