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Arrambide KA, Santa Ana CA, Schiller LR, Little KH, Santangelo WC, Fordtran JS.Arrambide KA, et al. Among authors: santangelo wc.Dig Dis Sci. 1989 Feb;34(2):193-201. doi: 10.1007/BF01536050.Dig Dis Sci. 1989.PMID: 2914537