1. Department of Orthopaedic SurgeryNanfang Hospital, Southern Medical University Guangzhou Guangdong China
2. Department of Orthopaedic SurgeryShunde First People Hospital Shunde Guangdong China
3. Biomaterials & Tissue Engineering Division, Department of Endodontics, Periodontics and ProsthodonticsUniversity of Maryland Dental School Baltimore MD USA
4. Center for Stem Cell Biology and Regenerative MedicineUniversity of Maryland School of Medicine Baltimore MD USA
5. University of Maryland Marlene and Stewart Greenebaum Cancer CenterUniversity of Maryland School of Medicine Baltimore MD USA
6. State Key Laboratory of Oral Diseases and Department of Oral Implantology, West China Hospital of StomatologySichuan University Chengdu China
7. Department of Spinal SurgeryNanfang Hospital, Southern Medical University Guangzhou Guangdong China
8. Department of Orthopaedic SurgeryDeqing Hospital Huzhou Zhejiang China