1. Nihon University School of Dentistry; Tokyo Japan
2. Department of Biochemistry; Nihon University School of Dentistry; Tokyo Japan
3. Division of Functional Morphology; Dental Research Center; Nihon University School of Dentistry; Tokyo Japan
4. Division of Microscopic Anatomy; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
5. Department of Endodontics; School of Dentistry; Shandong University; Jinan Shandong China
6. Department of Oral Microbiology; Nihon University School of Dentistry; Tokyo Japan
7. Divisions of Immunology and Pathobiology; Dental Research Center; Nihon University School of Dentistry; Tokyo Japan
8. Department of Microbiology and Immunology; Nihon University School of Dentistry at Matsudo; Chiba Japan