1. Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
2. Laboratory Animal Center, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
3. Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea
4. Department of Pharmacology & Dental Therapeutics, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea