Figure 1From: The Epstein-Barr virus latent membrane protein-1 (LMP1) 30-bp deletion and XhoI-polymorphism in nasopharyngeal carcinoma: a meta-analysis of observational studiesForest plot of the frequency of the occurrence of the two outcomes of interest in the patients with NPC. The confidence interval (CI) was 95%, and the diamond represents the pooled estimate. ID = identification of study.Back to article page