Funding for this research was provided by:
National Natural Science Foundation of China (61601329)
National Natural Science Foundation of China (61603275)
National Natural Science Foundation of China (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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