Additional file 7: Figure S1B. of The important role of circulating CYFRA21-1 in metastasis diagnosis and prognostic value compared with carcinoembryonic antigen and neuron-specific enolase in lung cancer patients

The survival functions analysis in SCLC patients based on increased concentrations in CEA, CYFRA21-1, NSE and positive numbers of biomarkers. *P < 0.05, **P < 0.001. (TIF 1899 kb)