1. Department of Orthodontics, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea
2. Department of Orthodontics, Kyung Hee University College of Dentistry, Kyung Hee University Medical Center, Seoul 02453, Republic of Korea
3. Department of Dentistry, Graduate School, Kyung Hee University, Seoul 02453, Republic of Korea
4. Department of Oral and Maxillofacial Surgery, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea
5. Department of Orthodontics, Kyung Hee University College of Dentistry, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea