Kim, Bookyoung
Son, Kyung-Bok http://orcid.org/0000-0002-6343-5808
Article History
Received: 4 July 2019
Accepted: 10 September 2020
First Online: 23 September 2020
Ethics approval and consent to participate
: This study used a de-identified secondary dataset. Therefore, it was exempt from review by the Institutional Review Board of Ewha Womans University (ewha-201907-0004-01).
: Not applicable.
: The authors declare that they have no competing interests.