1. Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
2. Department of Nanomedicine (DNP), Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
3. Department of Life Science, Research and Development Division for Applied Technology, Research and Development Center, Dai Nippon Printing Co., Ltd., Chiba, Japan.
4. Department of Cellular Physiological Chemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.