Funding for this research was provided by:
National Natural Science Foundation of China (51402120, 51302102)
University Natural Science Research Project of Anhui Province (KJ2014A222, KJ2017ZD31)
Natural Science Foundation of Anhui Province (1508085ME100, 1408085QA19)
Text and Data Mining valid from 2019-05-07
Received: 20 December 2018
Accepted: 22 April 2019
First Online: 7 May 2019
: The authors declare that they have no competing interests.
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