1. Department of Cardiothoracic Surgery, Nanjing Clinical Medical College, Second Military Medical University, Nanjing, Jiangsu, China (mainland)
2. Department of Cardiothoracic Surgery, Jinling Hospital, Nanjing, Jiangsu, China (mainland)
3. Department of Thoracic and Cardiac Surgery, Changhai Hospital, Second Military University, Shanghai, China (mainland)