1. Department of Orthopedic Surgery (T.Nakam.), University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
2. Internal Medicine 1 (T.Su.), Shimane University Faculty of Medicine, Izumo 693-8501, Japan
3. Tamana Central Hospital (T.Nakan.), Tamana 865-0064, Japan
4. Sanin Rosai Hospital (H.K.), Yonago 683-8605, Japan
5. Division of Radiology (M.I.), Nagasaki University School of Medicine, Nagasaki 852-8501, Japan
6. Kawasaki Medical School (M.F.), Kurashiki 701-0192, Japan
7. School of Health Science & Rehabilitation Division (H.H.), Faculty of Medicine, Tottori University, Yonago 683-8503, Japan
8. Department of Radiology (T.So.), Division of Nuclear Medicine, Kawasaki Medical School, Kurashiki 701-0192, Japan
9. Department of Orthopedic Surgery (H.Y.), Osaka University Graduate School of Medicine, Suita 565-0871, Japan
10. Osaka City University (Y.N.), Osaka 558-8585, Japan
11. Katsuragi Hospital (T.F.), Kishiwada 590-0842, Japan
12. Research Institute and Practice for Involutional Diseases (M.S.), Azumino 399-8101, Japan