Funding for this research was provided by:
National Natural Science Foundation of China (71463045)
Received: 26 June 2020
Accepted: 29 October 2020
First Online: 4 November 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Xi’an Medical University. Participants were fully informed of the objective of this study as well as their information was for academic use only. Written informed consent was provided by all participants.
: Not applicable.
: The authors declared that they had no competing interests.