Funding for this research was provided by:
National Natural Science Foundation of China (61603275, 61601329, 61601328)
Tianjin Higher Education Creative Team Funds Program
Applied Basic Research Program of Tianjin (18JCYBJC16100)
Text and Data Mining valid from 2019-03-11
Received: 5 December 2018
Accepted: 21 February 2019
First Online: 11 March 2019
: The authors declare that they have no competing interests.
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