Qiang Zheng1, Haiquan Chen2, Yuan Li3. 1. Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China; Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, People's Republic of China. 2. Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, People's Republic of China; Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China. 3. Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China; Department of Oncology, Shanghai Medical College of Fudan University, Shanghai, People's Republic of China. Electronic address: lumoxuan2009@163.com.