scientific article published on 25 October 2014
author: Sang Hoon Ahn, Ching-Lung Lai, Kwang-Hyub Han, Mong Cho, Kwan Sik Lee, Man-Fung Yuen, Seung Kew Yoon, Neung Hwa Park, Joo Hyun Sohn, Jiyoon Lee
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