1. Department of Pathology, Wakayama Medical University School of Medicine, Wakayama 641‑8509, Japan
2. Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba 271‑8587, Japan
3. Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Wakayama 641‑8509, Japan
4. Department of Human Pathology, Wakayama Medical University, Wakayama 641‑8509, Japan