1. School
of Chemical
Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
2. State Key Laboratory
of Oral Diseases, Sichuan University, Chengdu, Sichuan 610041, P. R. China
3. State Key Laboratory
of Polymer Materials Engineering, and Collaborative Innovation Center
for Biomaterials Science and Technology, Sichuan University, Chengdu, Sichuan 610065, P. R. China