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.
Survival analysis in a cohort with lung cancer with (A) overall survival of stage III–IV lung cancer and (B) PFS of stage III and IV lung cancer. PFS = progression-free survival.
