Funding for this research was provided by:
This work was supported by a Korea Research Foundation grant funded by the Korean Government (NRF-2017R1E1A1A01075188)
Received: 12 September 2020
Accepted: 1 March 2021
First Online: 7 March 2021
: The Institutional Review Board of Catholic University (MC18QNSI0055) reviewed and approved the study protocol. The data were collected after participants provided written informed consent. The participants were assured anonymity and confidentiality.
: Not applicable.
: The authors declare that they have no competing interests.