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(A) Overall survival (OS) for the three age groups (p= 0.9). (B) Disease-specific survival (DSS) for the three age groups (p= 0.6). (C) Disease-specific survival (DSS) of young patients according to clinical stage (p= 0.02). (D) Disease specific survival (DSS) for oral and oropharyngeal squamous cell carcinoma in the young patients (p= 0.7).
