1. State Key Laboratory of Oral Diseases
2. West China Hospital of Stomatology
3. Sichuan University
4. Chengdu 610041
5. China
6. School of Dentistry
7. University of California
8. Los Angeles
9. USA
10. Department of Biomedical Polymers and Artificial Organs
11. College of Polymer Science and Engineering
12. Chengdu 610065