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Authors
Ma, Shuguang
Wang, Tianshu https://orcid.org/0000-0002-8580-9954
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (11672145)
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Article History
Received: 6 November 2017
Accepted: 6 May 2018
First Online: 18 May 2018
Compliance with ethical standards
:
: The authors declare that no conflicts of interest exist in this manuscript.
