^○Do Xuan Hai¹, Nguyen Thi Hoa², Hoang Quoc Toan², Mai Van Vien² (1.Department of Practical and Experimental Surgery, 2.Department of Cardio-thoracic Surgery - 108 Medical Centre Hospital)

^○Yoshito Sakon, Takashi Murakami, Hiromichi Fujii, Yousuke Takahashi, Akimasa Morisaki, Kokoro Yamane, Noriaki Kishimoto (Osaka City University, Department of Cardiovascular Surgery)

^○Daiki Saitoh, Atsushi Shimizu, Kousaku Nishigawa, Tomoya Uhimuro, Shuichiro Takanashi (Sakakibara Heart Institute)