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Comparison of survival between different types of treatment with stratification based on the tumor stage. (A) Overall Survival in stages I or II (Log rank: 0.7, P = 0.4) (B) Overall Survival in stages III or IVA (Log rank: 1.6, P =0.2) (C) Event-Free Survival in stages I or II (Log rank: 0.1, P =0.7) (D) Event-Free Survival in stages III or IVA (Log rank: 2.8, P =0.1).
