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 curves of (a) Locoregional failure-free survival (LRFFS) and (b) Overall survival (OS) according to the number of risk factors.
