1. Department of Clinical Biostatistics Graduate School of Medicine Kyoto University Kyoto Japan
2. Department of Orthopedic Surgery Jikei University School of Medicine Tokyo Japan
3. School of Health Science Tottori University Faculty of Medicine Yonago Japan
4. Seirei Hamamatsu General Hospital Hamamatsu Japan
5. Touto Sangenjaya Rehabilitation Hospital Tokyo Japan
6. Department of Obstetrics and Gynecology 2 Kawasaki Medical School Okayama Japan
7. Department of Nuclear Medicine Kawasaki Medical School Kurashiki Japan
8. Eikokai Ono Hospital Ono Japan
9. Soen Orthopaedics Osteoporosis and Rheumatology Clinic Kobe‐shi Japan