1. Center for Frontier Medical Engineering, Chiba University
2. Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University
3. Assessment Committee on OLIF51 of the Japanese Society for Spine Surgery and Related Research (JSSR)
4. Department of Orthopaedic Surgery, Eastern Chiba Medical Center
5. Department of Orthopaedic Surgery, The Back Center Back Pain Spine Surgery Melbourne Florida
6. Department of Orthopaedic Surgery, Tsukuba University
7. Department of Orthopaedic Surgery, St. Marianna University School of Medicine
8. Department of Orthopaedic surgery, Kitasato University
9. Department of Orthopaedic Surgery, Kyoto University
10. First Department of Orthopaedic Surgery, Dokkyo Medical University Saitama Medical Center
11. Department of Orthopaedic Surgery, Kansai Medical University Medical Center
12. Department of Orthopaedic surgery, Okayama Rosai Hospital
13. Department of Orthopedic Surgery, Nippon Medical School, Chiba Hokusoh Hospital