Funding for this research was provided by:
Catholic Medical Center Research Foundation (program year of 2016).
Text and Data Mining valid from 2018-11-20
Received: 7 May 2018
Accepted: 29 October 2018
First Online: 20 November 2018
Ethics approval and consent to participate
: The protocols for this study were approved by the Institutional Review Board of the Catholic University of Korea (XC17ZCDI0066), and informed consent was obtained from all study participants.
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