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Takao Imazeki
Department of Cardiovascular Surgery, Tsuchiura Kyodo Hospital
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Hideki Nakahara
Department of Cardiovascular Surgery, Tsuchiura Kyodo Hospital
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Hideo Nagaoka
Department of Cardiovascular Surgery, Tsuchiura Kyodo Hospital
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Toru Sakamoto
Department of Cardiovascular Surgery, Tokyo Medical and Dental University
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Takayuki Yamada
Department of Cardiovascular Surgery, Tokyo Medical and Dental University