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Authors
Ma, Tengyu
Li, Longsuo
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (61873071)
Fundamental Research Funds in Heilongjiang Provincial Universities (135209246, 135209250, and 135209259)
Science and Technology Planning Project Fund of Qiqihar (GYGG-201718)
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Article History
Received: 25 December 2018
Accepted: 17 May 2019
First Online: 28 May 2019
Competing interests
: The authors declare that they have no competing interests.
