1. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
2. Department of Otorhinolaryngology, Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
3. Laboratory Animal Center of Sichuan University, Chengdu 610207, China
4. Laboratory of Stem Cell and Tissue Engineering, Orthopedic Research Institute, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China