Funding for this research was provided by:
The Beijing Major Science and Technology Projects (D171100002617003)
Article History
Received: 7 July 2020
Accepted: 27 December 2020
First Online: 1 March 2021
Compliance with ethical standards
:
: The authors declare there is no conflict of interest regarding the publication of this paper.
: The Institutional Ethical Committee of the primary author’s institution approved this study of collecting relative data and written informed consent was obtained from all participants.
: Primary author’s institution approved the publication of this study.
: Statistical analysis was accomplished under the assistance of SPSS version 24.0 for Windows (SPSS Inc., Chicago, IL, USA).