Funding for this research was provided by:
LG Electronics (-)
Catholic University of Korea (2020)
Article History
Received: 14 October 2020
Accepted: 25 November 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: Not applicable.
: All authors have consented to the submission of this manuscript for publication.
: The authors declare that they have no competing interests.