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EGFR immunostaining and expression scores in OSCCs. (A): Shown are images of low [1+], moderate [2+], and strong [3+] EGFR expression scores. (B, C): Shown are Kaplan-Meier estimates of the overall survival (B) and progression free survival (C) of EGFR+ (2+ and 3+) and EGFR- (0 and 1+) patients. HR, hazard ratio; CI, 95% confidence interval.
