Fig. 4From: The role of vascular endothelial growth factor as a prognostic and clinicopathological marker in osteosarcoma: a systematic review and meta-analysisPooled analysis for the association between VEGF overexpression and disease-free survival. A Forest plots. B Funnel plots. C Sensitive analysis. OS, overall survival; OR, odds ratio; CI, confidence intervals; s.e., standard errorBack to article page