Ma, Chen
Yin, Xiuqin
Wang, Haixia
Funding for this research was provided by:
National Natural Science Foundation of China (41171207)
China Scholarship Council (201706620065)
Article History
Received: 1 May 2018
Accepted: 13 December 2018
First Online: 5 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest in relation to this article.