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Combined VEGF/Ang-2 biomarker analysis. Forest plots of hazard ratios (bevacizumab plus chemotherapy vs placebo plus chemotherapy) for (A) progression-free survival by biomarker and (B) overall survival by biomarker (high VEGF/high Ang-2; high VEGF/low Ang-2; low VEGF/high Ang-2 and low VEGF/low Ang-2).
