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(A) Kaplan-Meier survival curves of patients with human papillomavirus (HPV)-positive stratified by matted nodes. For the patients who were HPV-positive with matted nodes, all of 6 deaths were due to distant metastasis. (B) Kaplan-Meier survival curves of patients who were HPV-negative stratified by matted nodes (p = .62). There was limited power given the sample size of this cohort. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]
