Zhang, Lingling http://orcid.org/0000-0002-8687-1186
Ji, J. C.
Funding for this research was provided by:
Scientific Research Key Project of Hunan Provincial Education Department (16A106)
the China Scholarship Council (2017)
Article History
Received: 2 November 2017
Accepted: 1 April 2018
First Online: 9 April 2018
Compliance with ethical standards
:
: The authors declare that for this article, there is no conflict of interest in authorial ascription to organizations or financial and personal relationships with other people.