1. Graduate student, Graduate School of Dentistry, Kyung Hee University, Seoul, South Korea
2. PhD student, Graduate School of Dentistry, Kyung Hee University, Seoul, South Korea
3. Private practice, Seoul, South Korea
4. Research Fellow, Department of Orthodontics, Kyung Hee University, Seoul, South Korea
5. Assistant Professor, Department of Orthodontics, Kyung Hee University, Seoul, South Korea
6. Professor, Department of Orthodontics, Kyung Hee University, Seoul, South Korea