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Kaplan-Meier plot for overall survival, local failure-free survival (B) and ≥ grade 3 toxicity-free survival (C). The 2- and 5-year overall survival, local failure-free survival, and toxicity-free survival rates were 57.9% and 45.8%, 64.1% and 52.5%, and 54.8% and 44.9%, respectively.
