| Institution: | 1. Department of Periodontology, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea;2. Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnnam National University, Gwangju, Korea;3. Department of Oral Pathology, School of Dentistry, Dental Science Research Institute, Chonnnam National University, Gwangju, Korea;4. Department of Preventive Medicine and Institute of Wonkwang Medical Science, Wonkwang University College of Medicine, Iksan, Korea |
