Yuan, Quan
Li, Junxia
Zhang, Lingwei
Wu, Zhefu
Liu, Guangyu
Funding for this research was provided by:
National Natural Science Foundation of China (61702272)
Nanjing University of Information Science and Technology (2243141701034)
National Natural Science Foundation of China (61773219, 61771249)
National Natural Science Foundation of China (61802199)
Article History
First Online: 4 October 2019
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.