Fig. 1

Kaplan–Meier curves for overall survival (a), disease-free survival (b), locoregional recurrence–free survival (c), and distant metastases–free survival (d) in stage II and T3N0M0 NPC patients treated with IMRT/chemotherapy and IMRT alone
Kaplan–Meier curves for overall survival (a), disease-free survival (b), locoregional recurrence–free survival (c), and distant metastases–free survival (d) in stage II and T3N0M0 NPC patients treated with IMRT/chemotherapy and IMRT alone