1. Department of Joint Surgery and Sports Medicine, Tokyo Medical and Dental University, Tokyo, Japan
2. Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute, Suita, Japan
3. Department of Cartilage Regeneration, Tokyo Medical and Dental University, Tokyo, Japan
4. Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan
5. Department of Nano-Biosciences, Tokyo Medical and Dental University, Tokyo, Japan