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Authors
Park, Y-H
Kim, S-U
Kwon, T-H
Kim, J-M
Song, I-S
Shin, H-J
Lee, B-K
Bang, D-H
Lee, S-J
Lee, D-S
Chang, K-T
Kim, B-Y
Yu, D-Y
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Article History
Received: 14 May 2015
Revised: 9 September 2015
Accepted: 18 September 2015
First Online: 26 October 2015
Competing interests
: The authors declare no conflict of interest.
