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Bunji Endoh
Department of Gastroenterology, Kyoto Medical Center, National Hospital Organization, Japan
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Naoki Esaka
Department of Gastroenterology, Kyoto Medical Center, National Hospital Organization, Japan
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Yoshiyuki Ota
Department of Gastroenterology, Kyoto Medical Center, National Hospital Organization, Japan
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Shinji Katsushima
Department of Gastroenterology, Kyoto Medical Center, National Hospital Organization, Japan