1. Department of Orthopaedic Surgery, St. Marianna University School of Medicine
2. Department of Orthopedic Surgery, Seirei Sakura Citizen Hospital
3. Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University
4. Department of Orthopaedic Surgery, Kitasato University School of Medicine
5. Department of Orthopaedic Surgery, Konodai Hospital, National Center for Global Health and Medicine
6. Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba