1. Department of Anatomy, Nihon University School of Dentistry, Japan
2. Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Japan
3. Department of Endodontics, Nihon University School of Dentistry, Japan
4. Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Japan
5. Department of Oral Diagnostic Sciences, Nihon University School of Dentistry, Japan
6. Division of Clinical Research, Dental Research Center, Nihon University School of Dentistry, Japan
7. Department of Physiology, Nihon University School of Dentistry, Japan
8. Department of Oral Physiology, Osaka University Graduate School of Dentistry