Funding for this research was provided by:
Gachon University (GCU-2018-0281)
Received: 26 April 2020
Accepted: 11 August 2020
First Online: 15 October 2020
: This research was conducted under the exemption and supervision of Gachon University Institutional Review Board (IRB Exemption No. 1044396-202007-HR-148-01) regarding ethical issues.
: The author declares that they have no competing interests.