Abstract
Unfortunately, there is a mistake in the author introductions at last part of this article. The working institution of Ying Yue should be “Northwest University, Xi'an, Shaanxi Province, China”. In the published paper, it was “Northwest University, Kirkland, WA, USA”. In order to avoid the conflict of the results ownership as well as for respect to the authors, we declare that this work is only carried out in Northwest University, China.
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