Cheng, Sanyin
Funding for this research was provided by:
the Fundamental Research Funds for the Central Universities (CCNU19HQ007)
Article History
First Online: 29 January 2019
Compliance with Ethical Standards
:
: 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.
: Informed consent was obtained from all individual participants included in the study.
: The researcher has no conflict of interest.