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Kazuhiro Ota
Department of Gastroenterology and Hepatology, Shiroyama Hospital, Japan The 2nd Department of Internal Medicine, Osaka Medical College, Japan
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Yoshimasa Hirata
Department of Gastroenterology and Hepatology, Shiroyama Hospital, Japan
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Takeshi Higashino
Department of Gastroenterology and Hepatology, Shiroyama Hospital, Japan
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Kazuhide Higuchi
The 2nd Department of Internal Medicine, Osaka Medical College, Japan