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Authors
Ren, Longfang
Niu, Qiaoxuan
Zhao, Jing
Qiang, Taotao
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Funding
Funding for this research was provided by:
National Science and Technology Major Project (2017YFB0308500)
Shaanxi Science and Technology Project (2018JM5164)
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Article History
Received: 12 April 2019
Accepted: 12 November 2019
First Online: 6 February 2020
Competing interests
: The authors declare that they have no competing interests.
