Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Flow diagram of the included studies (1028 publications from PubMed, Embase, Medline, Web of Science were identified using the predefined search strategy, and after duplication checking, title and abstract screening and full-text review, five studies fulfilled the predefined inclusion criteria and were included in the final analysis.)
