. 2011 Dec 31;9(2):45–49. doi: 10.5049/EBP.2011.9.2.45
Copyright © 2011 The Korean Society of Electrolyte Metabolism
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.