*Hyejin Kwon, Postgraduate student, Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea *Sun-Hyung Park, Clinical assistant professor, Department of Orthodontics, The Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea Hoi-In Jung, Assistant professor, Department of Preventive Dentistry and Public Oral Health, College of Dentistry, Yonsei University, Seoul, Korea Woo-Chan Hwang, Postgraduate student, Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea Yoon-Jeong Choi, Associate professor, Department of Orthodontics, The Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea Choo-Ryung Chung, Professor, Department of Orthodontics, The Institute of Craniofacial Deformity, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University, Seoul, Korea Kyung-Ho Kim, Professor, Department of Orthodontics, The Institute of Craniofacial Deformity, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University, Seoul, Korea
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, Federica Pellitteri 
