1. Graduate Student, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
2. Professor, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
3. Associate Professor, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
4. Clinical Assistant Professor, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.
5. Fellow, Department of Orthodontics, School of Dentistry, Pusan National University, Korea.