1. Doctor of Dental Clinic, Woori Dental Office, Gwangju, Republic of Korea
2. Resident, Department of Periodontology, Chosun University Dental Hospital, Gwangju, Republic of Korea
3. Assistant Professor, Department of Periodontology, Chosun University Dental Hospital, Gwangju, Republic of Korea
4. Professor, Department of Periodontology, Chosun University Dental Hospital, Gwangju, Republic of Korea