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Ryuichi Ajisaka
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Shigeyuki Watanabe
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Noriyuki Takeyasu
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Masahiro Toyama
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Yasuro Sugishita
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Author's Organization:Department of Medicine, Institute of Clinical Medicine, University of Tsukuba Department of Medicine, Institute of Clinical Medicine, University of Tsukuba Department of Medicine, Institute of Clinical Medicine, University of Tsukuba Department of Medicine, Institute of Clinical Medicine, University of Tsukuba Department of Medicine, Institute of Clinical Medicine, University of Tsukuba