. 2013 Jul 25;85(2):75–79. doi: 10.4174/jkss.2013.85.2.75
Copyright © 2013, the Korean Surgical Society
Journal of the Korean Surgical Society is an Open Access Journal. All articles are 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.
Filtering of data. HIRA, Health Insurance Review and Assessment Service.