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Masakazu NAGAHORI
Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University
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Toshimitsu FUJII
Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University
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Eiko SAITO
Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University
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Kazuo OHTSUKA
Department of Endoscopy, Tokyo Medical and Dental University Hospital
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Mamoru WATANABE
Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University