Funding for this research was provided by:
Young Scientists Fund (81402093)
Major Research Plan (81272404)
Program for Professor of Special Appointment (Eastern Scholar to J, Wang)
National key program for basic researc (2011CB510106)
Text and Data Mining valid from 2019-03-30
Received: 25 January 2019
Accepted: 22 February 2019
First Online: 30 March 2019
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