Institution: | 1. 1st Department of Anatomy, Nihon University School of Dentistry, Chiyoda‐ku, Tokyo, Japan;2. Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Chiyoda‐ku, Tokyo, Japan;3. Department of Pathology, Nihon University School of Dentistry, Chiyoda‐ku, Tokyo, Japan;4. 2nd Department of Anatomy, Nihon University School of Dentistry, Chiyoda‐ku, Tokyo, Japan |