1. School of Materials Science & Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China Tianjin University Tianjin 300072 China
2. School of Materials Science & Engineering Peking University Beijing 100871 China
3. School of Health Science and Biomedical Engineering Hebei University of Technology Xiping Avenue 5340 Beichen District Tianjin 300401 China
4. Department of Orthopedics Guangdong Provincial People's Hospital Guangdong Academy of Medical Sciences Guangzhou 510080 China
5. Shenzhen Key Laboratory of Spine Surgery Department of Spine Surgery Peking University Shenzhen Hospital Shenzhen 518035 China
6. Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong Kowloon Hong Kong 999077 China