1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, School of Chemical Engineering, Sichuan University, Chengdu, 610041, China
2. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
3. Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
4. Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, 610041, China