1. Department of Occupational Health and Occupational Medicine
2. The Public Health School
3. Shandong University
4. Shandong
5. China
6. Image Center
7. Jinan Third People's Hospital
8. The Second Hospital of Shandong University
9. Department of Radiation Oncology
10. Washington University School of Medicine
11. St. Louis
12. USA
13. Department of Radiation Oncology and Molecular Biology Program
14. Memorial Sloan Kettering Cancer Center
15. New York