1. Department of Radiation Oncology Guangzhou Concord Cancer Center Guangzhou China
2. Department of Radiation Oncology Affiliated Cancer Hospital & Institute of Guangzhou Medical University Guangzhou China
3. State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine Sun Yat‐sen University Cancer Center Guangzhou China
4. Department of Radiation Oncology Sun Yat‐sen University Cancer Center Guangzhou China
5. Department of Health Management Public Health Institute of Sun Yat‐sen University Guangzhou China
6. Department of Finance Hong Kong University of Science and Technology Hong Kong China
7. Department of Radiation Oncology, Antoine Lacassagne Cancer Center University of Nice‐Sophia Nice France
8. Mediterranean Institute of Proton Therapy Antoine Lacassagne Cancer Center, University of Nice‐Sophia Nice France
9. Division of Life Sciences and Medicine, Department of Radiation Oncology The First Affiliated Hospital of University of Science and Technology of China Hefei China