Figure 5.
Funnel plots for publication bias test: for OS (A and B); for RFS (C and D). OS = overall survival, RFS = recurrence-free survival.
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.