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Kaoru Takabayashi
Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Japan
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Naoki Hosoe
Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Japan
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Haruhiko Ogata
Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Japan
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Takanori Kanai
Division of Gastroenterology and Hepatology, Keio University School of Medicine, Japan