aDepartment of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju, Korea
bInstitute of Poverty Alleviation & International Development, Yonsei University, Wonju, Korea
cDepartment of Health Administration, College of Health Sciences, Yonsei University, Wonju, Gangwon, Korea
dDepartment of Preventive Medicine, Wonju College of Medicine, Yonsei University, Wonju, Korea
eDepartment of Public Administration, College of Government and Business, Yonsei University, Wonju, Korea
© 2015 Published by Elsevier B.V. on behalf of Korea Centers for Disease Control and Prevention.
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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.