Fig. 2.
The operation time of the 3D group was shorter than that of the conventional group and the difference was statistically significant. (Forest plot of operation time).
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.