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Open AccessCYFRA 21-1 level predicts survival in non-small-cell lung cancer patients receiving gefitinib as third-line therapy
Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI) as gefitinib emerged as an accepted treatment in second- or third-line setting in NSCLC. However, clinical surrogate markers of EGFR-TKI...