Chen, Sugen
Wu, Xiaojun
Yin, Hefeng
Funding for this research was provided by:
National Natural Science Foundation of China (No.61373055, No. 6110312)
National Natural Science Foundation of China (61702012)
Article History
First Online: 11 December 2017
Compliance with ethical standards
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: The authors declare that there is no conflict of interests regarding the publication of this paper.