1. Zhejiang Key Laboratory for Tissue Engineering and Repair Technology, School of Medicine, Zhejiang University, Hangzhou, P.R. China.
2. Department of Sports Medicine, School of Medicine, Zhejiang University, Hangzhou, P.R. China.
3. Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R. China.
4. Central Laboratory, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, P.R. China.