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Yuichi Takano
Division of Gastroenterology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Japan
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Masataka Yamawaki
Division of Gastroenterology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Japan
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Tetsushi Azami
Division of Gastroenterology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Japan
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Masatsugu Nagahama
Division of Gastroenterology, Department of Internal Medicine, Showa University Fujigaoka Hospital, Japan