1. Department of Oral and Maxillofacial Surgery, Gangnam Severance Hospital, Yonsei University College of Dentistry , Seoul, Republic of Korea
2. Department of Oral and Maxillofacial Surgery, Ildong Hospital , Pocheon-si, Republic of Korea
3. Department of Orthodontics, Institute of Craniofacial Deformity, Gangnam Severance Hospital, Yonsei University College of Dentistry , Seoul, Republic of Korea
4. Kwangwhamun Sun Dental Clinic , Seoul, Republic of Korea