1. Ceramic Physics Laboratory Kyoto Institute of Technology Kyoto Japan
2. Department of Orthopedic Surgery Tokyo Medical University Tokyo Japan
3. The Center for Advanced Medical Engineering and Informatics Osaka University Osaka Japan
4. Department of Immunology, Graduate School of Medical Science Kyoto Prefectural University of Medicine Kyoto Japan
5. Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University Tokyo Japan