Funding for this research was provided by:
Capacity Building for Sci-Tech Innovation – Fundamental Scientific Research Funds (19530050184)
Article History
Accepted: 3 December 2020
First Online: 5 February 2021
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: We confirm that all procedures performed in this study involving human participants were in accordance with the ethical standards of Capital Normal University and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: We confirm that informed consent was obtained from all individual participants included in the study.