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Graham DY, Smith JL, Spjut HJ, Torres E.Graham DY, et al. Among authors: smith jl.Gastroenterology. 1988 Aug;95(2):327-33.Gastroenterology. 1988.PMID: 3260568
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Graham DY, Smith JL, Patterson DJ.Graham DY, et al. Among authors: smith jl.Am J Gastroenterol. 1983 May;78(5):257-60.Am J Gastroenterol. 1983.PMID: 6846300Clinical Trial.
Opekun AR, Smith JL, Graham DY.Opekun AR, et al. Among authors: smith jl.Dig Dis Sci. 1990 Aug;35(8):950-5. doi: 10.1007/BF01537242.Dig Dis Sci. 1990.PMID: 2384040