Complex Etiology Underlies Risk and Survival in Head and Neck Cancer Human Papillomavirus, Tobacco, and Alcohol: A Case for Multifactor Disease : Figure 1

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Figure 1: (a) Oral cavity disease-specific Kaplan-Meier survival curves by E6/E7 and tumor DNA status. (b) Oropharynx disease-specific Kaplan-Meier survival curves by E6/E7 and tumor DNA status.