1. Department of Oral Pathology; School of Dentistry and Institute of Biodegradable Material; Institute of Oral Bioscience; Brain Korea 21 Project; Chonbuk National University; Jeon-ju Korea
2. Department of Dermatology and Biochemistry; Medical College of Wisconsin; Milwaukee WI USA
3. Department of Preventive Dentistry; School of Dentistry and Institute of Oral Bioscience; Chonbuk National University; Jeonju Korea
4. Department of Dental Biomaterials and Institute of Biodegradable Material; Institute of Oral Bioscience and BK21 Plus Project; School of Dentistry; Chonbuk National University; Jeonju Korea