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Machiko Hirakoba
Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine
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Keiichiro Kume
Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine
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Masahiro Yamasaki
Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine
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Kikuo Kanda
Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine
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Ichiro Yoshikawa
Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine
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Makoto Otsuki
Department of Gastroenterology and Metabolism, University of Occupational and Environmental Health, Japan, School of Medicine