1. Medical School of Nanjing University, Nanjing, Jiangsu, China,
2. Department of Cardiothoracic Surgery, Jinling Hospital, Clinical Medicine School of Nanjing University, Nanjing, Jiangsu, China,
3. Department of Cardiothoracic Surgery, Affiliated People’s Hospital of Jiangsu University, Zhenjiang, China, and
4. Department of Cardiothoracic Surgery, The First People’s Hospital of Changzhou and The Third Affiliated Hospital of Suzhou University, Changzhou, China