Funding for this research was provided by:
National Natural Science Foundation of China (No. 31871182)
Article History
Received: 2 July 2020
Accepted: 23 September 2020
First Online: 8 October 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This systematic literature review was performed following the Preferred Reporting Items for Systematic reviews and Meta-analyses (PRISMA) guidelines.
: This is a review, for this type of study, no informed consent is required.