1. Resident, Department of Periodontology, School of Dentistry, Chosun University, Gwangju, Republic of Korea
2. Fellow, Department of Periodontology, School of Dentistry, Chosun University, Gwangju, Republic of Korea
3. Associate Professor, Department of Periodontology, School of Dentistry, Chosun University, Gwangju, Republic of Korea
4. Professor, Department of Periodontology, School of Dentistry, Chosun University, Gwangju, Republic of Korea