1 Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
2 Department of Oncology, The First Affiliated Hospital of Army Medical University, Chongqing, People's Republic of China.
3 Department of Lung Cancer and Immunology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China.
4 Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People's Republic of China. caicunzhoudr@yeah.net.