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Katsuhito NISHIMURA
Department of Gastroenterology, Shibetsu City General Hospital
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Shigeru TAKEUCHI
Department of Gastroenterology, Shibetsu City General Hospital
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Youko KIKUCHI
Department of Gastroenterology, Shibetsu City General Hospital
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Shinji WATANABE
Department of Gastroenterology, Shibetsu City General Hospital
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Masataka YAMADA
Department of Gastroenterology, Shibetsu City General Hospital
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Katsushige YAMASHIRO
Department of Pathology, National Hospital Hokkaido Cancer Center