Peng, Xindong
Funding for this research was provided by:
National Natural Science Foundation of China (61462019)
MOE (Ministry of Education in China) Project of Humanities and Social Sciences (18YJCZH054)
Natural Science Foundation of Guangdong Province (2018A030307033)
General Project of Shaoguan University (SY2016KJ11)
Article History
Received: 26 August 2018
Accepted: 17 October 2018
First Online: 7 November 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.