1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Korea
2. Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Sana’a University, Sana’a, Yemen
3. Clinical Translational Research Center for Dental Science, Seoul National University Dental Hospital, Seoul, Korea
4. Dental Research Institute, College of Dentistry, Seoul National University, Seoul, Korea
5. Oral Cancer Center, Seoul National University Dental Hospital, Seoul, Korea