. 2019 Mar 25;49(1):1–7. doi: 10.5624/isd.2019.49.1.1
Copyright © 2019 by Korean Academy of Oral and Maxillofacial Radiology
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.