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Kaplan-Meier curve for recurrent progression-free survival of patients between groups.*Log-rank test: Group A vs. Group B(P=0.008), Group A vs. Group C (P=0.016), Group A vs. Group D(P<0.001), Group B vs. Group C(P=0.620), Group B vs. Group D(P=0.163), Group C vs. Group D(P=0.156).
