1. Department of Oral and Maxillofacial Pathology; School of Dentistry and Research Center for Tooth & Periodontal Regeneration (MRC); Kyung Hee University; Seoul Korea
2. Department of Prosthodontics; School of Dentistry; Kyung Hee University; Seoul Korea
3. Department of Oral Anatomy; School of Dentistry; Kyung Hee University; Seoul Korea