Funding for this research was provided by:
National Natural Science Foundation of China (82072578, U1804281)
Emergency Prevention and Control of COVID-19 Project of Henan Province
Article History
Received: 3 August 2021
Revised: 12 October 2021
Accepted: 13 October 2021
First Online: 27 October 2021
Competing interests
: The authors declare no competing interests.