1. a Clinical Professor, Department of Orthodontics, Yongdong Severance Dental Hospital, Yonsei University, Seoul, South Korea
2. b MS graduate student, Department of Orthodontics, Yongdong Severance Dental Hospital, Yonsei University, Seoul, South Korea
3. c Professor, Department of Oral and Maxillofacial Surgery, Yongdong Severance Dental Hospital, Yonsei University, Seoul, South Korea
4. d Clinical Assistant Professor, Department of Dentistry, Konkuk University Hospital, Seoul, South Korea
5. e Professor, Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, South Korea
6. f Professor, Department of Orthodontics, Yongdong Severance Dental Hospital, Oral Science Research Center, Craniofacial Deformity Research Center, College of Dentistry, Yonsei University, Seoul, South Korea