1. Department of Orthopedics, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, Zhejiang 322000, PR China
2. Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, PR China
3. Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310000, PR China