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Digestive disease week of Japan 1994 and Eightieth Annual Spring Meeting of the Japanese Society of Gastroenterology April 22–26, 1994, Kobe, Japan. Gastroenterol Jpn 28, 765 (1993). https://doi.org/10.1007/BF02806363
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DOI: https://doi.org/10.1007/BF02806363