1. Department of Orthopaedic Surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University , Chiba, Japan
2. Graduate School of Global and Transdisciplinary Studies, Chiba University , Chiba, Japan
3. “Locomo Challenge!” Promotion Council , Tokyo, Japan
4. Departments of Sensory & Motor System Medicine, Faculty of Medicine, The University of Tokyo , Tokyo, Japan
5. Department of Planning, Information and Management, University of Tokyo Hospital , Tokyo, Japan
6. Data Science Center, Promotion Unit, Institute of Health Science Innovation for Medical Care, Hokkaido University Hospital , Hokkaido, Japan
7. Department of Orthopaedic Surgery, North Osaka Housenka Hospital , Osaka, Japan
8. Sato Orthopaedic Clinic , Tokyo, Japan
9. Department of Orthopaedic Surgery, NTT Medical Center , Tokyo, Japan