1. Graduate Student, Department of Orthodontics, Dental Science Research Institute, School of Dentistry, 2nd Stage of Brain Korea 21, Chonnam National University, Korea.
2. Associate Professor, Department of Orthodontics, Dental Science Research Institute, School of Dentistry, 2nd Stage of Brain Korea 21, Chonnam National University, Korea.
3. Professor, Department of Orthodontics, Dental Science Research Institute, School of Dentistry, 2nd Stage of Brain Korea 21, Chonnam National University, Korea.