. 2016 Sep 12;49(3):569–577. doi: 10.4143/crt.2016.289
Copyright © 2017 by the Korean Cancer Association
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.
Fig. 1.
CONSORT diagram.