Fig. 8From: Comparison of first-line chemotherapy based on irinotecan or other drugs to treat non-small cell lung cancer in stage IIIB/IV: a systematic review and meta-analysisTrial identification and inclusion in the systematic review of irinotecan-based chemotherapy efficacy in different ethnicities: The literature was selected according to the criteria as follows: (1) NSCLC patients with previously untreated with chemotherapy; (2) treated with irinotecan-based doublet regimen; (3) prospective clinical trials Phase II and IIIBack to article page