Liu, Jing-xin
Zhu, Lin
Funding for this research was provided by:
National Planning Office of Philosophy and Social Science (18BTY075)
Article History
Received: 31 March 2019
Accepted: 2 May 2019
First Online: 10 May 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest regarding the publication of this letter.
: This articel does not contain any studies with human or animals performed by any of authors.
: For this article, formal consent forms is not required.