1 Department of Thoracic Surgery, Guizhou Provincial People's Hospital, Guiyang, Guizhou 550001, China.
2 Department of Graduate School, Zunyi Medical University, Zunyi, Guizhou 563000, China.
3 Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.