Affiliation: | 1. Department of Advanced General Dentistry, College of Dentistry, Yonsei University, Seoul, Korea;2. Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea;3. Department of Advanced General Dentistry, Human Identification Research Institute, Yonsei University College of Dentistry, Seoul, Korea;4. Department of Dental Education, Yonsei University College of Dentistry, Seoul, Korea |