1. 1Department of Orthopaedics, the Second Affiliated Hospital of Soochow University, Suzhou, China
2. 2Emergency Department, Zhongshan Hospital Affiliated to Fudan University, Shanghai, China
3. 3Department of Radiology, Children's Hospital of Soochow University, Suzhou, Jiangsu, China
4. 4Osteoprosis Institute of Soochow University, Suzhou, China