1Department of Orthopedics, Minhang Hospital, Fudan University, 170 Xin Song Road, Shanghai 201199, PR China
2Department of Biochemistry and Molecular Biology, School of medicine, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
3Department of Orthopedics, The Fifth Hospital of Xiamen, 101 Min 'an Road, Maxiang Town, Xiang 'an District, Xiamen, Fujian Province, 361101, PR China