Lee, Bora
Byun, Soo-yong
Article History
Received: 7 March 2019
Accepted: 5 June 2019
First Online: 29 June 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study has been approved by the Institutional Review Board of the first author’s institution as exempt research using secondary data. The study complied with ethical standards.
: The current study used secondary data and, therefore, is not applicable for receiving informed consent.