Wang, Caiqin
Qiao, Weilong
Chen, Hui
Xu, Xiangyang
Zhu, Liang
Article History
Received: 1 June 2018
Revised: 10 August 2018
Accepted: 7 October 2018
First Online: 12 December 2018
Compliance with ethical standards
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: Competing financial interests: C.W. declares no competing financial interests. W.Q. declares no competing financial interests. H.C. declares no competing financial interests. X.X. declares no competing financial interests. L.Z. declares no competing financial interests.
: This article does not contain any studies with human participants or animals performed by any of the authors.