1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization
2. Department of Polymer Science and Engineering, Zhejiang University
3. Hangzhou 310027
4. China
5. Institute of Transfusion Medicine and Berlin-Brandenburg Center for Regenerative Therapies
6. Charité-Universitätsmedizin Berlin
7. 10117 Berlin
8. Germany
9. Dr Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine