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Authors
Song, Eun Song
Yoon, Somy
Cho, Joo Hyun
Yang, Eun Mi
Cho, Hwa Jin
Choi, Young Youn
Ma, Jae Sook
Eom, Gwang Hyeon
Cho, Young Kuk
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Article History
Received: 18 February 2017
Revised: 17 June 2017
Accepted: 16 July 2017
First Online: 12 March 2018
Compliance with ethical standards
:
: All procedures performed in studies involving human participants were in accordance with the ethical standards declaration and its later amendments or comparable ethical standards.
: All authors declare that they have no conflict of interest.
