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Ken-ichi HOSONUMA
Department of Gastroenterology, Haramachi Red Cross Hospital
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Keiichiro YUASA
Department of Gastroenterology, Haramachi Red Cross Hospital
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Shoji YAMADA
Department of Gastroenterology, Haramachi Red Cross Hospital
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Hitoshi TAKAGI
First Department of Internal Medicine, Gunma University School of Medicine
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Masatomo MORI
First Department of Internal Medicine, Gunma University School of Medicine