Figure 4.
Funnel plots of the publication bias of each subgroup (autologous PRP, A; homologous PRP, B) and of publication bias of the pooled included trials (C). Color images are available online.
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.