Fig. 3.
Overall survival by post-PD therapy with a second-line platinum doublet chemotherapy and b EGFR TKI in any line
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.