1. Department of Bone and Joint Disease (K.H., Y.A., S.Tak., S.Tat., N.K., S.N., K.I.) Research Institute, National Center for Geriatrics and Gerontology (NCGG), Obu, Aichi 474-8522, Japan
2. Department of Surgery (K.H., Y.A., Y.N.), Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
3. National Institute of Biomedical Innovation (S.Tat.), Osaka 567-0085, Japan
4. Department of Genome Science (T.N.), Institute of Medical Science, St. Marianna University of Medicine, Kanagawa 216-8512, Japan
5. Department of Orthopedic Surgery (S.Tan.), University of Tokyo School of Medicine, Tokyo 113-8655, Japan
6. Department of Radiology (M.I.), Nagasaki University School of Medicine, Nagasaki 852-8501, Japan
7. Department of Genetics and Development (G.K.), Columbia University, New York, New York 10032