Pooled analyses and quality assessment were performed with Review Manager 5.3.



Review Manager 5.3
A systematic literature search was performed in Pubmed, Web of Science and Scopus databases from inception to March 2020, based on fixed inclusion and exclusion criteria. 
Pubmed
A systematic literature search was performed in Pubmed, Web of Science and Scopus databases from inception to March 2020, based on fixed inclusion and exclusion criteria. 
Web of Science
A systematic literature search was performed in Pubmed, Web of Science and Scopus databases from inception to March 2020, based on fixed inclusion and exclusion criteria. 
Scopus