1. Department of Oral and Maxillofacial Surgery, Saiseikai Senri Hospital, Suita‑shi, Osaka 565‑0862, Japan
2. Department of Oral and Maxillofacial Oncology and Surgery, Osaka University Graduate School of Dentistry, Suita‑shi, Osaka 565‑0871, Japan
3. Department of Oral and Maxillofacial Pathology, Osaka University Graduate School of Dentistry, Suita‑shi, Osaka 565‑0871, Japan