1. Professor, Department of Periodontology and Dental Education, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
2. Professor, Department of Oral Bacteriology, Tsurumi University School of Dental Medicine, Yokohama, Japan
3. Director, Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, U.S. Army Institute of Surgical Research, JBSA Fort Sam, Houston, TX, USA