. 2013 Nov 29;6(4):243–248. doi: 10.3342/ceo.2013.6.4.243
Copyright © 2013 by Korean Society of Otorhinolaryngology-Head and Neck Surgery.
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.
Table 1.
Patients characteristics
