Abstract
The above article, published online on 31 December 2019, in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between Hong Ma, Cui Liu and Yan Qu, the journal Editor-in-Chief, Wan-Long Chuang, and John Wiley and Sons Ltd. The retraction has been agreed because the article was submitted and approved for publication by Hong Liu without consent from the named co-authors Shi-Ying Ren, Yan Qu, Cui Liu, Yi Zhang, Xiang Qing Li, and Hong Ma. Other authors were not available for a final confirmation of the retraction.