. 2013 Sep 27;15(3):174–181. doi: 10.5853/jos.2013.15.3.174
Copyright © 2013 Korean Stroke Society
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.