1. Institute for Chemistry and Biochemistry Freie Universität Berlin Takustraße 3 14195 Berlin Germany
2. BIH Center for Regenerative Therapies (BCRT) Charité-Universitätsmedizin Berlin Corporate Member of Freie-Universität Berlin Humboldt-Universität zu Berlin and Berlin Institute of Health (BIH) Berlin Germany
3. College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610064 China
4. Department of Physics Freie Universität Berlin Arnimallee 14 14195 Berlin Germany
5. Center for Musculoskeletal Surgery Charité—Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin Humboldt-Universität zu Berlin and Berlin Institute of Health Berlin Germany
6. Research Center for Electron Microscopy and Core Facility BioSupraMol Institute for Chemistry and Biochemistry Freie Universität Berlin Fabeckstrasse 36a 14195 Berlin Germany
7. Department of Ultrasound West China Hospital Sichuan University Chengdu 610065 China