Fig. 1From: Prognostic value of plasma Epstein–Barr virus DNA level during posttreatment follow-up in the patients with nasopharyngeal carcinoma having undergone intensity-modulated radiotherapyKaplan–Meier disease-free survival and Epstein–Barr virus (EBV) failure-free survival curves for the 385 patients with nasopharyngeal carcinoma who were treated with intensity-modulated radiotherapyBack to article page