1. Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, China.
2. Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Hangzhou, China.
3. School of Stomatology, Peking University, Beijing, China.
4. Institute of Immunology, School of Medicine, Zhejiang University, Hangzhou, China.
5. Department of Orthopedics of the Second Affiliated Hospital, Zhejiang University, Hangzhou, China.