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 Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. Biomedical Materials Engineering Research Center, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, Hubei Key Laboratory of Polymer Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China
4. School of Materials Science & Engineering, State Key Laboratory for Turbulence and Complex System, Peking University, Beijing 100871, China
5. Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong 999077, China
6. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States