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Authors
Kim, Doo-Ho
Kim, Junghwan
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Article History
Accepted: 18 February 2020
First Online: 7 April 2020
Compliance with ethical standards
:
: Doo‑Ho Kim and Junghwan Kim declare that they have no conflict of interest.
: The protocol of this study was approved by the Committee of Ethics in Research of the University of Yongin, in accordance with the terms of Resolution 5-1-20. Furthermore, all volunteers provided their informed consent to participate in the present study.
