Figure 3.
Sensitivity analysis after excluding studies with moderate-to-high risk of bias ((A), upper) and forest plot of subgroup analysis ((B), lower).
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.