Funding for this research was provided by:
National Natural Science Foundation of China (61472246)
National Basic Research Program of China (973 Program) (2013CB956103)
National High-Tech R&D Program(863) (2014AA021502)
Text and Data Mining valid from 2018-01-01
Received: 9 October 2017
Accepted: 8 August 2018
First Online: 22 August 2018
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