Funding for this research was provided by:
Applied Basic Research Key Project of Yunnan (No. 2017FB086)
National Natural Science Foundation of China (51562038)
key Project of Natural Science Foundation of Yunnan (2018FY001(-011))
Text and Data Mining valid from 2019-02-14
Received: 10 December 2018
Accepted: 4 February 2019
First Online: 14 February 2019
: The authors declare that they have no competing interests.
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