1. Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Osaka, Japan
2. Department of Oral Microbiology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
3. Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
4. Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Kanazawa University Institute for Frontier Science Initiative, Kanazawa, Japan