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Yusuke Biwata
Department of Gastroenterology, Yokohama Sakae Kyosai Hospital, Japan
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Eiji Sakai
Department of Gastroenterology, Yokohama Sakae Kyosai Hospital, Japan
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Masahiko Kawaguchi
Department of Surgery, Yokohama Sakae Kyosai Hospital, Japan
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Toru Watanabe
Department of Surgery, Yokohama Sakae Kyosai Hospital, Japan