1. Department of Oral Health, School of Life Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan.
2. Department of Medical Chemistry & Biochemistry, Medical University Sofia, Sofia, Bulgaria.
3. Section of Developmental and Regenerative Dentistry, School of Life Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan.
4. Department of Community and Preventive Dentistry, School of Life Dentistry at Niigata, Nippon Dental University, Niigata, Japan.
5. Department of NDU Lifesciences, School of Life Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan.