1. Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Osaka, Japan.
2. Division of Special Care Dentistry, Osaka University Dental Hospital, Osaka, Japan.
3. Building Block Science Joint Research Chair, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.
4. Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan.
5. Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan.