1. Department of Radiation Oncology, Fudan University Shanghai Cancer Center Shanghai People's Republic of China
2. Department of Oncology, Shanghai Medical College, Fudan University Shanghai People's Republic of China
3. Department of Biostatistics, Zhongshan Hospital, Fudan University Shanghai People's Republic of China
4. Department of Radiology, Fudan University Shanghai Cancer Center Shanghai People's Republic of China
5. Department of Medical Oncology, Fudan University Shanghai Cancer Center Shanghai People's Republic of China
6. State Key Laboratory of Cancer Biology & Xijing Hospital of Digest Diseases, Fourth Military Medical University Xi'an People's Republic of China