The meta-analysis was conducted using the Review Manager 5 software.



Review Manager 5
Eligible studies were searched from the PubMed, EMBASE and Web of Science databases. 
PubMed
Eligible studies were searched from the PubMed, EMBASE and Web of Science databases. 
EMBASE
Eligible studies were searched from the PubMed, EMBASE and Web of Science databases. 
Web of Science