Figures legend
Figure 1. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flow chart.
Figure 2 A. Forest plot of the primary outcome late survival.2B . Forest plot of the primary outcome tumor relapse.
Figure 3. Risk of bias analysis.
Supplementary Figure 1. High quality studies. Forest plot of the primary outcome late survival.
Supplementary Figure 2. High quality studies. Forest plot of the primary outcome tumor relapse.
Supplementary Figure 3. Funnel plot primary outcome late survival.
Supplementary Figure 4 . Funnel plot primary outcome tumor relapse.