1. The Center of Diagnosis and Treatment for Joint Disease; Drum Tower Hospital Affiliated to Medical School of Nanjing University; Zhongshan Road 321 Nanjing 210008 Jiangsu, PR China
2. Laboratory for Bone and Joint Diseases, Model Animal Research Center; Nanjing University; Nanjing 210061 Jiangsu, PR China
3. Center of Diagnosis and Treatment for Developmental Dysplasia of Hip; Kang'ai Hospital; Nanjing 210008 Jiangsu, PR China