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Yoshihiro SHIMADA
The Kosei Medical Research Laboratories
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Masayoshi NAMIKI
The Theid Department of Internal Medicine, Asahikawa Medical College
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Hiroshi OBATA
Department of Internal Medicine, Institute of Gastroenterology, Tokyo Woman's Medical College
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Yasuyuki ARAKAWA
The Third Department of Internal Medicine, Nihon University School of Medicine
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Susumu KAWAMURA
Yamaguchi Rosai Hospital
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Shiro FUKUMOTO
Yamaguchi Rosai Hospital
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Akiko SAITO
Department of Internal Medicine, Institute of Gastroenterology, Tokyo Woman's Medical College
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Satoru IKEDA
The Second Department of Internal Medicine, Shimane Medical University