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Takashi Nawata
Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan Department of Internal Medicine, Sanyo-Onoda Municipal Hospital, Sanyo-Onoda, Japan
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Michihiro Toyoshige
Department of Internal Medicine, Sanyo-Onoda Municipal Hospital, Sanyo-Onoda, Japan
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Motoaki Sano
Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan