Received: 6 June 2021
Accepted: 17 September 2021
First Online: 12 November 2021
: This study performed in accordance with the Declaration of Helsinki. This study was approved for a review exemption from the institutional review board of a university, Chuncheon, Korea (KWNUIRB-2020–07–006).
: Not applicable.
: The authors declare no conflicts of interest.