1. Key Laboratory of Advanced Technologies of Materials (Ministry of Education); School of Materials Science and Engineering, Southwest Jiaotong University; Chengdu Sichuan 610031 China
2. Department of Orthopedics; 452nd Hospital of Chinese PLA; Chengdu Sichuan 610021 China
3. State Key Laboratory of Oral Diseases; Sichuan University; Chengdu Sichuan 610065 China