Funding for this research was provided by:
Science and Technology Research Program (2015B070701003, 2016A040403060, 2017B030314171, 2016201604030059 and 2017A070702001)
National Key Technology R&D Program (2015BAI07B01)
Text and Data Mining valid from 2018-09-21
Received: 19 April 2018
Accepted: 20 August 2018
First Online: 21 September 2018
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.
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