Figure 4

Survival curves in relation to 7 th UICC/TNM node stage. Prognosis worsened with increasing N stage (χ2 = 128.78, P < 0.01).
Survival curves in relation to 7 th UICC/TNM node stage. Prognosis worsened with increasing N stage (χ2 = 128.78, P < 0.01).