1. Department of Medical Oncology, Sichuan Cancer Hospital, Medical School of University of Electronic Science and Technology of China, Chengdu, Sichuan 610041, P.R. China
2. Department of Thoracic Surgery, Sichuan Cancer Hospital, Medical School of University of Electronic Science and Technology of China, Chengdu, Sichuan 610041, P.R. China
3. Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
4. Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
5. Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China