Kim, Sina
Lee, Hye-Yoon
Kim, Nam-Kwen
Yook, Tae Han
Seo, Eun-Sung
Kim, Jong Uk
Funding for this research was provided by:
Ministry of Health and Welfare (HB16C0028)
Article History
Received: 5 February 2018
Accepted: 29 October 2018
First Online: 19 November 2018
Ethics approval and consent to participate
: The survey of KNHANES phase IV and V were approved by KCDC Research Ethics Review Committee (Approval No. 2008-04EXP-01-C, 2009-01CON-03-2C, 2010-02CON-21-C, 2011-02CON-06-C, 2012-01EXP-01-2C).
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.