Funding for this research was provided by:
National Research Foundation of Korea (NRF-2019H1D8A2105513, NRF-2019H1D8A2105513)
National Research Foundation of Korea (NRF-2020K2A9A1A01095894, NRF-2020K2A9A1A01095894)
National Research Foundation of Korea (NRF-2020K2A9A1A01095894)
Institute for Information & communications Technology Planning & Evaluation (IITP-2020-0-01819, IITP-2020-0-01819)
Article History
Received: 6 August 2020
Revised: 18 January 2021
Accepted: 24 April 2021
First Online: 25 May 2021
Declaration
:
: The authors declare that they have no conflict of interest.