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 survival curves for patients. (A) Survival curve of ground-glass nodules (GGNs); (B) survival curves for invasive adenocarcinoma (IA) of radiological GGN appearance. No statistically significant difference between VPI (+) and VPI (−) groups emerged (P=0.691).
