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Seitaro Iguchi
Department of Community Medicine, Niigata University Graduate School of Medical and Dental Sciences
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Katsuhiko Takabayashi
Sanwa Hospital
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Toshiro Sugiyama
Department of Gastroenterology and Hematology, Graduate School of Medicine and Pharmaceutical Sciences University of Toyama
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Eiji Kajii
Center for Community Medicine, Jichi Medical University
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Takahiro Maeda
Department of Community Medicine, Nagasaki University Graduate School of Biomedical Science