Funding for this research was provided by:
Science and Technology Department of Henan Province (201701021)
Received: 6 October 2020
Accepted: 7 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: Approval was obtained from the ethics committee of People's Hospital of Zhengzhou University. The procedures used in this study adhere to the tenets of the Declaration of Helsinki. Informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that there are no conflicts of interest.