. 2013 Dec 23;37(6):824–831. doi: 10.5535/arm.2013.37.6.824
Copyright © 2013 by Korean Academy of Rehabilitation Medicine
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 noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.