[Chen, Long-Qi; Yan, Cheng-Yi; Shang, Qi-Xin; Wang, Wen-Ping; Gu, Yi-Min; Yuan, Yong; Zhang, Han-Lu; Yang, Yu-Shang] Sichuan Univ, West China Hosp, Dept Thorac Surg, 37 Guoxue Alley, Chengdu 610041, Sichuan, Peoples R China.
[Yan, Cheng-Yi] Univ South China, Changsha Cent Hosp, Dept Cardiothorac Surg, Changsha, Hunan, Peoples R China.
[Shi, Gui-Dong] North Sichuan Med Coll, Affiliated Hosp, Dept Cardiothorac Surg, Nanchong, Sichuan, Peoples R China.