1. Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University
2. Department of Orthopaedic Surgery, Chiba Cancer Center
3. Department of Orthopaedic Surgery, Toho University of Sakura Hospital
4. Department of Orthopaedic Surgery, Asahi Central Hospital
5. Department of Orthopaedic Surgery, Shimoshizu National Hospital
6. Department of Orthopaedic Surgery, St. Marianna University School of Medicine
7. Department of Orthopaedic Surgery, Eastern Chiba Medical Center
8. Biostatistics Section, Clinical Research Center, Chiba University Hospital
9. Center for Frontier Medical Engineering, Chiba University