Correction to: Changes in maximum lip-closing force after extraction and nonextraction orthodontic treatments

Affiliations

• ¹ Department of Orthodontics, Seoul National University Bundang Hospital, Section of Dentistry, Seoul National University, Seongnam, Korea.
• ² Department of Oral Medicine and Diagnosis, College of Dentistry and Research Institute of Oral Science, Gangneung-Wonju National University, Gangneung, Korea.
• ³ Department of Orthodontics, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
• ⁴ Division of Orthodontics, School of Dentistry, University of Minnesota, Minneapolis, MN, USA.