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Toshihiko NAMIHISA
Department of Medicine, Division of Gastroenterology, Juntendo University School of Medicine
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Masaji NAMBU
Department of Medicine, Division of Gastroenterology, Juntendo University School of Medicine
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Norio KOBAYASHI
Department of Medicine, Division of Gastroenterology, Juntendo University School of Medicine
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Hiroyuki KURODA
Department of Medicine, Division of Gastroenterology, Juntendo University School of Medicine