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Keisuke Kawasaki
Division of Gastroenterology, Department of Internal Medicine, Iwate Medical University, Japan
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Koichi Kurahara
Division of Gastroenterology, Matsuyama Red Cross Hospital, Japan
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Yumi Oshiro
Department of Pathology, Matsuyama Red Cross Hospital, Japan
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Takayuki Matsumoto
Division of Gastroenterology, Department of Internal Medicine, Iwate Medical University, Japan