1. Graduate schoolThe Catholic university of Korea Seoul Korea
2. Department of Preventive Dental SciencesCollege of DentistryKing Faisal University Al‐Hufof Saudi Arabia
3. Arizona School of Dentistry & Oral HealthA.T. Still University Mesa Arizona
4. Graduate School of DentistryKyung Hee University Seoul Korea
5. Department of OrthodonticsSeoul St. Mary's HospitalCollege of MedicineThe Catholic University of Korea Seoul Korea
6. Department of DentistrySt. Paul’s HospitalCollege of MedicineThe Catholic University of Korea Seoul Korea
7. Department of OrthodonticsSection of DentistrySeoul National University Bundang HospitalSeongnam Gyeonggi Province Korea