Funding for this research was provided by:
bioresources from National Biobank of Korea, the Centers for Disease Control and Prevention (2017-009)
Korea Center for Disease Control and Prevention (2005-E71013-00, 2006-E71002-00, 2007-E71013-00, 2008-E71004-00, 2009-E71006-00, 2010-E71003-00)
Basic Science Research Program through the National Research Foundation of Korea (2017R1D1A3B03034119)
Medical Research Center Program (2017R1A5A2015369)
(in part) by the Yonsei University Research Fund (2017)
Received: 25 February 2019
Accepted: 19 November 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: This study was included human participants and human data, a statement on ethics approval and consent, and the name of the ethics committee that approved the study.This study was approved by the Institutional Review Board of the Wonju Christian Hospital, Ajou University Medical Center, and the Korea University Ansan Hospital according to the Helsinki Declaration. All the participants provided informed written consent.
: Not applicable.
: The authors declare that they have no competing interests.