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Misato Nagao
Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Japan
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Takeshi Okamoto
Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Japan
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Jun Nishikawa
Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Japan
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Isao Sakaida
Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, Japan