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Leddin DJ, Ray M, Dinda PK, Prokopiw I, Beck IT.Leddin DJ, et al. Among authors: beck it.Gastroenterology. 1988 Mar;94(3):726-32. doi: 10.1016/0016-5085(88)90246-6.Gastroenterology. 1988.PMID: 3338641
Prokopiw I, Dinda PK, Beck IT.Prokopiw I, et al. Among authors: beck it.Gastroenterology. 1989 Jul;97(1):42-7. doi: 10.1016/0016-5085(89)91413-3.Gastroenterology. 1989.PMID: 2721878
Ray M, Dinda PK, Beck IT.Ray M, et al. Among authors: beck it.Gastroenterology. 1989 Feb;96(2 Pt 1):345-54. doi: 10.1016/0016-5085(89)91558-8.Gastroenterology. 1989.PMID: 2910756