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Authors
Park, Mi Hee
Bae, Sun Sik
Choi, Kang-Yell
Min, Do Sik
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Article History
Received: 27 July 2015
Revised: 19 August 2015
Accepted: 8 September 2015
First Online: 27 November 2015
Competing interests
: The authors declare no conflict of interest.
