Figure 3. Galbraith plot analysis was used to evaluate heterogeneity.
It indicated that none of the included studies could be the possible source of heterogeneity.
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.