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Yoshiaki Iwashita
Department of Cardiology, Tohoku Central Hospital of the Mutual Aid Association of Public School Teachers, Japan
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Kiyoharu Sakurai
Department of Cardiology, Tohoku Central Hospital of the Mutual Aid Association of Public School Teachers, Japan
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Toru Kanaya
Department of Cardiology, Tohoku Central Hospital of the Mutual Aid Association of Public School Teachers, Japan