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Chayama K, Arase Y, Koida I, Tsubota A, Saitoh S, Ikeda K, Matsumoto T, Kanda M, Iwasaki S, Kobayashi M, et al.Chayama K, et al. Among authors: tsubota a.J Gastroenterol Hepatol. 1994 Mar-Apr;9(2):128-33. doi: 10.1111/j.1440-1746.1994.tb01231.x.J Gastroenterol Hepatol. 1994.PMID: 8003644Clinical Trial.
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