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Editorial
Published: January 01, 2013
DOI: 10.3961/jpmph.2013.46.S.S1
License: Copyright © 2013 The Korean Society for Preventive Medicine2013This 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.