Funding for this research was provided by:
National Natural Science Foundation of China (21777154)
National Key Research and Development Program of China (2017YFD0200201, 2017YFE0107300)
Strategic Priority Research Program of Chinese Academy of Sciences (XDB15020302, XDB15020402)
CAS President’s International Fellowship Initiative (PIFI) for 2017
K. C. Wong Education Foundation
Text and Data Mining valid from 2018-12-07
Received: 29 April 2018
Revised: 13 October 2018
Accepted: 16 October 2018
First Online: 7 December 2018
Compliance with ethical standards
: This research does not involve the use of human or animals.
: The authors declare that they have no conflicts of interest.