1Department of Orthopedic Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
2The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Shanghai, China
3Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
4Shanghai Key Laboratory of Orthopaedic Implant, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China