1. Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan.
2. Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan.
3. Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
4. Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
5. Research Center for Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.