1. Postgraduate student, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
2. Associate Professor, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
3. Research Scientist, Medical Science Research Institute, Pusan National University Hospital, Korea.
4. Professor, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
5. Associate Professor, Department of Oral & Maxillofacial Surgery, School of Dentistry, Pusan National University, Korea.