Text and Data Mining valid from 2019-02-04
Received: 13 November 2017
Accepted: 28 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: The authors certify that the research was approved by the Institutional Review Board of Sookmyung Women’s University (No. SM-IRB-13-0823-004). The authors informed all participants about the purpose of the present study and assured all the participants that their participation was entirely voluntary and their answers anonymous.
: Not applicable.
: The authors declare that they have no competing interests.
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