Zou, Shengqi
Wu, Xinchun
Funding for this research was provided by:
National Social Science Fund of China (15ZDB139)
Article History
Received: 17 July 2019
Accepted: 21 September 2019
First Online: 7 October 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of Beijing Normal University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All participants in the study provided informed consent.