1. Department of Orthopedic Surgery, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo 113-8510, Japan
2. Department of Orthopedic Surgery, Saku General Hospital Saku Medical Center, Nagano 385-0051, Japan
3. Department of Health Promotion, Saku General Hospital Saku Medical Center, Nagano 385-0051, Japan
4. Division of Orthopedic Surgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv 6423906, Israel
5. Office for Global Education and Career Development, Institute of Global Affairs, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
6. Department of Global Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
7. Department of Orthopaedic and Spine Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan