1. Department of Orthopaedics, Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guangzhou China
2. Department of Orthopaedics, West China Hospital; Sichuan University; Chengdu China
3. Department of Orthopaedics, China-Japan Union Hospital; Jilin University; Changchun China
4. Department of Orthopaedics; the First Affiliated Hospital of Zhengzhou University; Zhengzhou China
5. Novartis Pharmaceuticals; Beijing China
6. Department of Orthopaedics; Beijing Hospital; Beijing China
7. Department of Orthopaedics, Nanjing Drum Tower Hospital; the Affiliated Hospital of Nanjing University Medical School; Nanjing China