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D. Y. Lee
Department of Thoracic and Cardiovascular Surgery, Yongdong Severance Hospital, Yonsei University of Medical College
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H. C. Paik
Department of Thoracic and Cardiovascular Surgery, Yongdong Severance Hospital, Yonsei University of Medical College
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J. J. Hwang
Department of Thoracic and Cardiovascular Surgery, Yongdong Severance Hospital, Yonsei University of Medical College