Research Article
The Efficacy of Long-Term Chinese Herbal Medicine Use on Lung Cancer Survival Time: A Retrospective Two-Center Cohort Study with Propensity Score Matching
Figure 4
Kaplan–Meier curve of PFS for patients with stages I (a), II (b), III (c), and IV (d) (before PSM).
(a) |
(b) |
(c) |
(d) |