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Authors
Ko, Kyung Rae
Lee, Won-Young
Lee, Hyobeom
Park, Hee Seol
Sung, Ki-Sun https://orcid.org/0000-0003-1314-1171
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Article History
Received: 3 January 2018
Accepted: 31 July 2018
First Online: 6 August 2018
Compliance with ethical standards
:
: The authors have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of our institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all participants.
