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.
Publication bias evaluation: (A) Begg’s funnel plot with pseudo 95% confidence intervals; (B) Egger’s publication bias plot; (C) Egger’s test result; (D) Funnel plot of included studies; (E) filled funnel plot with pseudo 95% confidence intervals.
