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Masaya Iwamuro
Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
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Yoshiro Kawahara
Department of Practical Gastrointestinal Endoscopy, Okayama University Hospital, Japan
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Hiroyuki Okada
Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Japan