Chung, Jee Eun
Song, Gonjin
Kim, Kitai
Yee, Jeong
Kim, Joo Hee
Lee, Kyung Eun
Gwak, Hye Sun http://orcid.org/0000-0003-0278-2563
Funding for this research was provided by:
National Research Foundation of Korea (2017R1C1B5016202)
Chungbuk National University
Article History
Received: 28 November 2018
Accepted: 31 March 2019
First Online: 18 April 2019
Ethics approval and consent to participate
: This study was approved by the Honam University Review Board (Approval No. 1041223–201,510– HR-090-01). Informed consents were obtained from students’ parents.
: Not applicable.
: The authors declare that they have no competing interests.
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