1 Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
2 Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China. Electronic address: chenthoracic@163.com.
3 Department of Thoracic Surgery, East China Sanatorium, Wuxi, People's Republic of China.