1. Department of Cardiothoracic Surgery, The Third Affiliated Hospital, Sun Yat‑sen University, Tianhe, Guangzhou, Guangdong 510630, P.R. China
2. Department of Thoracic Surgery, ShenZhen Hospital of Southern Medical University, Bao'an, ShenZhen, Guangdong 518000, P.R. China
3. Department of Cardiothoracic Surgery, ZhuJiang Hospital of Southern Medical University, Haizhu, Guangzhou, Guangdong 510280, P.R. China