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Receiver operation characteristic curves (ROCs) for the tumor markers in serum for the discrimination between lung cancer and healthy control. SCCA 0.578 ± 0.077 (95% CI 0.427~0.728), NSE 0.928 ± 0.034 (95% CI 0.861~0.994), CEA 0.957 ± 0.026 (95% CI 0.905~1.008), and CYFRA21-1 0.964 ± 0.023 (95% CI 0.919~1.01).
