Funding for this research was provided by:
National Research Foundation of Korea (NRF-2017R1D1A1B03035018)
Sahmyook University (Sahmyook University)
Received: 23 July 2020
Accepted: 5 May 2021
First Online: 22 May 2021
: This study was approved by the Institutional Review Board of Sahmyook University. Written informed consent was obtained from all participants in accordance with the Declaration of Helsinki.
: Written informed consent was obtained from participants for publication.
: The authors declare that they have no competing interests.