1 Department of Thoracic Surgery, The First Hospital of Jilin University, #71 Xinmin Street, Chaoyang District, Changchun 130021, Jilin, China.
2 Department of Thoracic Surgery, The First Hospital of Jilin University, #71 Xinmin Street, Chaoyang District, Changchun 130021, Jilin, China. Electronic address: shaoguoguang520@163.com.