1. Department of Orthopaedic Surgery, Faculty of Medicine, University of Toyama , Toyama, Japan
2. Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University , Chongqing, China
3. Department of Trauma and Orthopaedic Surgery, Vietnam Military Medical University , Hanoi, Vietnam
4. WPI-Immunology Frontier Research Center, Osaka University , Suita, Osaka, Japan