1. CAS Key Laboratory of Standardization and Measurement for Nanotechnology
2. National Center for Nanoscience and Technology
3. Beijing 100190, P.R. China
4. Academy for Advanced Interdisciplinary Studies
5. Peking University
6. Department of Chemistry
7. Renmin University of China
8. Translational Medicine Center
9. Laboratory of Oncology
10. Affiliated Hospital of Academy of Military Medical Sciences
11. Beijing 100071, P.R. China