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.
Kaplan–Meier analysis of overall survival (OS) after brain metastasis of advanced hepatocellular carcinoma patients with brain metastasis, showing the whole group (A), and grouped by patients receiving brain tumor excision or not (B).
Abbreviation: CI, confidence interval.
