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Authors
Cheng, Yunqing
Zhang, Yuchu
Liu, Chunming
Ai, Pengfei
Liu, Jianfeng
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (31770723, 31370683, 31670681)
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Article History
Received: 10 October 2017
Accepted: 26 April 2018
First Online: 9 May 2018
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.
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