1. Institute of Orthopedics, Chinese PLA General Hospital, Fuxing Road no. 28, Beijing 100853, PR China
2. Beijing Key Lab of Regenerative Medicine in Orthopedics, Fuxing Road no. 28, Beijing 100853, PR China
3. Key Lab of Musculoskeletal Trauma & War Injuries, PLA, Fuxing Road no. 28, Beijing 100853, PR China
4. Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226007, PR China
5. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
6. School of Medicine, Nankai University, Weijin Road no. 94, Tianjin 300071, PR China
7. Experimental Surgery and Regenerative Medicine, Department of Surgery, Ludwig-Maximilians-University, Nussbaumstrasse 20, Munich 80336, Germany