Response to the Letter

Affiliations

• ¹ Private Practice, Seoul, Korea.
• ² Assistant Professor, Dept. of Orthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
• ³ Research Assistant Professor, Dept. of Dentistry, College of Medicine, The Catholic University of Korea, Seoul, Korea; Visiting Professor, Dept. of Postgraduate Studies, the Universidad Autonóma del Paraquay, Asunción, Paraguay.
• ⁴ Professor, Dept. of Orthodontics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
• ⁵ Assistant Professor, Dept. of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea.
• ⁶ Professor and Chair, Postgraduate Orthodontic Program, Arizona School of Dentistry & Oral Health, A.T. Still University, Mesa, AZ, USA; International Scholar, Graduate School of Dentistry, Kyung Hee University, Seoul, Korea.