scientific article published on 28 July 2015
author: Cheol Ryong Ku, Sang-Wook Kang, Jong Ju Jeong, Dong Yeob Shin, Kee-Hyun Nam, Young Suk Jo, Cho Rok Lee, Jandee Lee, Woong Youn Chung, Sang Geun Jung, Eun Jig Lee
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