1. Department of Nuclear Medicine
2. West China Hospital
3. Sichuan University
4. Chengdu 610041
5. P.R. China
6. Catalysts and Organic Synthesis Research Laboratory
7. Department of Chemistry
8. Iran University of Science and Technology
9. Tehran 16846-13114
10. Iran
11. Wellman Center for Photomedicine
12. Massachusetts General Hospital
13. Boston
14. USA
15. Department of Dermatology
16. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases
17. Department of Orthodontics
18. West China Hospital of Stomatology