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Survival curves stratified by the 8th TNM staging of patients with EBV DNA ≥103 copies/ml and<105 copies/ml. A Overall survival curves of patients according to TNM staging. B Progression-free survival curves of patients according to TNM staging. C Loco-regional recurrence-free survival curves of patients according to TNM staging. D Distant metastasis-free survival curves of patients according to TNM staging.
