Oh, Jong-Chi http://orcid.org/0000-0002-3469-9257
Funding for this research was provided by:
Cheongju University (2018.03.01-2020.02.29)
Article History
Received: 10 April 2018
Accepted: 18 September 2018
First Online: 24 September 2018
Compliance with Ethical Standards
:
: The authors declare that there are no competing interests.
: All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committees and the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All the participants provided informed consents to participate in this study.