Funding for this research was provided by:
National Natural Science Foundation of China (Nos.51502033, 61734002 & 61571079)
National R&D Program of China (Nos.2017YFA0207400 & 2016YFA0300801)
Science and Technology Project of Sichuan Province (No.2017JY0002)
Fundamental Research Funds for the Central Universities of China (No.2672018ZYGX2018J030)
Text and Data Mining valid from 2018-07-24
Received: 11 June 2018
Accepted: 13 July 2018
First Online: 24 July 2018
: The authors declare that they have no competing interests.
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