Funding for this research was provided by:
Key-Area Research and Development Program of Guangdong Province (2018B020241002)
Received: 13 February 2021
Accepted: 3 August 2021
First Online: 18 August 2021
: The protocol of this study was approved by the Animal Ethics and Welfare Committee of the School of Public Health, Southern Medical University.
: Not applicable.
: The authors declare that they have no competing interests.