Affiliation: | 1. Department of Radiation Oncology, State Key Laboratory of Oncology in Southern China, Cancer Center, Sun Yat‐sen University, Guangzhou, People's Republic of China;2. State Key Laboratory of Oncology in Southern China, Imaging Diagnosis and Interventional Center, Cancer Center, Sun Yat‐sen University, Guangzhou, People's Republic of China;3. Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat‐sen University, Guangzhou, People's Republic of China |