Funding for this research was provided by:
Department of Science and Technology of Sichuan Province (2021YFS0022, 2021YFS0022, 2021YFS0022, 2021YFS0022, 2021YFS0022)
Article History
Received: 6 March 2021
Revised: 5 July 2021
Accepted: 8 July 2021
First Online: 23 July 2021
Competing interests
: The authors declare no competing interests.
: The need for ethics approval was waived because this was a meta-analysis and involved no people or animals.