Funding for this research was provided by:
Korea Institute of Science and Technology Information (K-20-L03-C05-S01)
National Research Foundation of Korea (2019R1C1C1006358)
Article History
Received: 16 April 2020
Accepted: 19 August 2020
First Online: 10 September 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.