An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Choi YJ, Lee JS, Cha JY, Park YC.Choi YJ, et al. Among authors: cha jy.Am J Orthod Dentofacial Orthop. 2011 Jun;139(6):823-33. doi: 10.1016/j.ajodo.2009.07.026.Am J Orthod Dentofacial Orthop. 2011.PMID: 21640890
Bae MJ, Kim JY, Park JT, Cha JY, Kim HJ, Yu HS, Hwang CJ.Bae MJ, et al. Among authors: cha jy.Am J Orthod Dentofacial Orthop. 2013 Jun;143(6):893-901. doi: 10.1016/j.ajodo.2013.02.018.Am J Orthod Dentofacial Orthop. 2013.PMID: 23726340
Lee YJ, Park JT, Cha JY.Lee YJ, et al. Among authors: cha jy.Am J Orthod Dentofacial Orthop. 2015 Sep;148(3):405-13. doi: 10.1016/j.ajodo.2015.03.033.Am J Orthod Dentofacial Orthop. 2015.PMID: 26321338