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Mitsuro CHIBA
First Department of Internal Medicine, Akita University School of Medicine
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Kiyoshi IGARASHI
First Department of Internal Medicine, Akita University School of Medicine
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Mistuo GOTOH
First Department of Internal Medicine, Akita University School of Medicine
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Hiromichi ARAKAWA
First Department of Internal Medicine, Akita University School of Medicine
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Osamu MASAMUNE
First Department of Internal Medicine, Akita University School of Medicine