1. Department of Diagnostic Radiology
2. National Cancer Center/Cancer Hospital
3. Chinese Academy of Medical Science and Peking Union Medical College
4. Beijing 100021
5. P. R. China
6. The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
7. Department of Chemistry
8. Tsinghua University
9. Beijing 100084
10. Science and Technology on Advanced Ceramic Fibers and Composites Laboratory
11. National University of Defense Technology
12. Changsha
13. Beijing Laboratory of Biomedical Materials
14. Beijing University of Chemical Technology
15. Beijing 100029