Affiliation: | 1. Department of Periodontology, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea;2. Department of Oral and Maxillofacial Surgery, Korea University Anam Hospital, Seoul, Korea;3. Department of Oromaxillofacial Infection & Immunity, BK21 CLS, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea |