EGFR and non-small cell lung carcinoma: NSCLC: Non-small cell lung cancer, G: Gefitinib, CT: Chemotherapy, EGFR: Epidermal growth factor receptor, TKI: Tyrosine kinase inhibitors, RCT: Randomized clinical trial, DFS: Disease-free survival, OS: Overall survival, PFS: Progression-free survival, TAI: Transarterial infusion, BSC: Best supportive care, VP: Vinorelbine plus cisplatin, CP: Carboplatin and pemetrexed, CD: Cisplatin plus docetaxel