. 2005 Oct 31;20(5):892–894. doi: 10.3346/jkms.2005.20.5.892
Copyright © 2005 The Korean Academy of Medical Sciences
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.