1. Department of Ultrasound West China Hospital College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Med‐X Center for Materials Sichuan University Chengdu 610041 China
2. Department of Chemistry and Biochemistry Freie Universität Berlin Takustrasse 3 Berlin 14195 Germany
3. State Key Laboratory of Oral Diseases National Clinical Research Center for Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu 610065 China
4. Center for Microscopy and Analysis Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China
5. Max Planck Institute for Solid State Research Heisenbergstraße 1 Stuttgart 70569 Germany
6. Chinese PLA General Hospital Beijing Key Lab of Regenerative Medicine in Orthopedics No. 28 Fuxing Road, Haidian District Beijing 100853 China
7. Department of Orthopaedics The Affiliated Hospital of Guizhou Medical University Yunyan District Guiyang City Guizhou Province 550004 China