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Kazumasa MIKI
1st Department of Internal Medicine, Toho University School of Medicine
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Masahiko SASAJIMA
1st Department of Internal Medicine, Toho University School of Medicine
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Yasuhito SHIMIZU
Department of Gastroenterology, Faculty of Medicine, University of Tokyo
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Masao ICHINOSE
Department of Gastroenterology, Faculty of Medicine, University of Tokyo
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Yoshiki HIKI
Kitasato University East Hospital
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Shigemitsu SHIDA
Tokyo Health Service Association