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Hidemitsu Kakihata
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Shigeo Tanaka
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Yasuyuki Suzuki
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Masamichi Tadokoro
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Eiji Ishizawa
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Yuzuru Kagawa
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Hitoshi Mohri
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Togo Horiuchi
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai, Japan
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Keiji Usui
Depart. of Anesthesiology Tohoku University School of Medicine, Sendai, Japan