Funding for this research was provided by:
National Natural Science Foundation of China (61771486, 61671472)
Natural Science Foundation of Jiangsu Province (BK20181335)
Natural Science Foundation of Jiangsu Province (CN) (BK20160079)
Text and Data Mining valid from 2019-09-09
Received: 6 December 2018
Accepted: 21 February 2019
First Online: 9 September 2019
: The authors declare that they have no competing interests.
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