4.
两种VATS术式治疗Ia期和Ib期肺腺癌患者的无病生存期曲线。A：Ia期；B：Ib期。
DFS curves of patients with stage Ia lung adenocarcinoma after two kinds of VATS resection. A: stage Ia; B: stage Ib.
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.