Funding for this research was provided by:
Guangzhou Science, Technology and Innovation Commission (201604020090)
Article History
Received: 11 February 2020
Accepted: 1 December 2020
First Online: 19 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: As this meta-analysis was performed based on the published data, ethical approval was not required.