Funding for this research was provided by:
National Research Foundation of Korea (NRF-2013R1A1A2007300)
Published online: 2015-03-20
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Copyright: Copyright © 2015 Korean Association for Laboratory Animal Science
License: 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.