1. Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
2. Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
3. Department of Pathology, School of Medicine, Chosun University, Gwangju, Republic of Korea.