1. Department of Orthopaedic Surgery, Ningbo No. 6 Hospital, Ningbo, Zhejiang, China
2. Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
3. Department of Orthopaedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China