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Tatsuya Ohkawara
Department of Medical Information, Hokkaido Information University Depertment of Internal Medicine, Ebetsu Tanifuji Hospital Department of Gastroenterology and Hematology, Hokkaido University Graduate School of Medicine
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Jun Nishihira
Department of Medical Information, Hokkaido Information University
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Mototsugu Kato
Division of Endoscopy, Hokkaido University Hospital
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Hiroshi Takeda
Department of Gastroenterology and Hematology, Hokkaido University Graduate School of Medicine
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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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Masahiro Asaka
Department of Gastroenterology and Hematology, Hokkaido University Graduate School of Medicine