Zheng, Yueli
Zhou, Zongkui
Liu, Qingqi
Yang, Xiujuan
Fan, Cuiying
Article History
First Online: 8 June 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Central China Normal University had provided IRB approval for the study.
: Informed consent was obtained from all individual participants included in the study.