Funding for this research was provided by:
Natural Science Foundation of Yunnan Province (2016FB051, 2014FB186)
CAS 135 program (2017XTBG-T02)
Text and Data Mining valid from 2018-05-22
Received: 30 July 2017
Accepted: 9 May 2018
First Online: 22 May 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
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