1. Department of Orthopedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
2. Department of Orthopedic Surgery, International University of Health and Welfare, Narita, Chiba, Japan
3. Department of Orthopedic Surgery, University of Yamanashi, Chuo, Yamanashi, Japan
4. Department of Orthopedic Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
5. Department of Orthopedic Surgery, North Alps Medical Center Azumi Hospital, Kita Azumi, Nagano, Japan
6. Department of Orthopedic Surgery, Narita Memorial Hospital, Toyohashi, Aichi, Japan
7. Department of Orthopedic Surgery and Division of Geriatric Musculoskeletal Health, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
8. Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan