1 Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.
2 Department of Thoracic Surgery, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
3 Department of Thoracic Surgery, Chengdu Third People's Hospital, Chengdu, China.
4 Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, China.
5 Department of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China. cheguowei_hx@aliyun.com.