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.
Black numbers indicate histology type (1 = adenocarcinoma, 2 = adenosquamous carcinoma, 3 = bronchioloalveolar carcinoma, 4 = carcinoid, 5 = large cell carcinoma, 6 = small cell carcinoma, 7 = squamous cell carcinoma).
