1. Department of Orthopaedics, Beijing Jishuitan Hospital Fourth Clinical College of Peking University Beijing China
2. Orthopaedic Department Peking University Third Hospital Beijing China
3. Department of Orthopaedics and Traumatology, Wuhan Fourth Hospital (Puai Hospital) Tongji Medical College, Huazhong University of Science and Technology Wuhan China
4. Department of Joint Surgery and Sports Medicine The Second Hospital of Shandong University Jinan China
5. Department of Orthopaedic Surgery Peking University People's Hospital Beijing China