Liu, Fang http://orcid.org/0000-0002-0272-1181
Feng, Yongxin
Funding for this research was provided by:
National Natural Science Foundation of China (61501309)
the China Postdoctoral Science Foundation (2017T100185)
the Liaoning Natural Science Foundation of China (2017011002-301)
Article History
First Online: 5 November 2019
Compliance with ethical standards
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: The authors declare that they have no competing interests.