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.
Plots for evaluating publication bias and heterogeneity in the random-effects model with included studies related to intraoral ultrasonography (US1 model). (A) funnel plot; (B) radial plot; (C) normal quantile–quantile plot; (D) Baujat plot.
