Article History
Received: 2 February 2021
Accepted: 20 August 2021
First Online: 14 September 2021
Declarations
:
: Our research protocol was submitted for consideration, commenting, guidance and approval to the institutional review board of Yonsei University and accepted before the study began (IRB approval number: Y-2019-0162).
: Not applicable.
: All data generated or The data supporting the findings of this study are not publicly available due to security of the ROK army.
: The authors declare that they have no conflict of interest.