1. Assistant Professor, Department of Orthodontics, College of Dentistry, Research Institute for Oral Science, Gangneung-Wonju National University, Korea.
2. Full Time Lecturer, Department of Orthodontics, College of Dentistry, Research Institute for Oral Science, Gangneung-Wonju National University, Korea.
3. Professor, Department of Orthodontics, College of Dentistry, Research Institute for Oral Science, Gangneung-Wonju National University, Korea.