1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Research Unit of Oral Carcinogenesis and Management, Chinese Academy of Medical Sciences, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
2. School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
3. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China