. 2014 Nov 24;44(6):312–319. doi: 10.4041/kjod.2014.44.6.312
© 2014 The Korean Association of Orthodontists.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.