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Kaplan–Meier analysis. Five-year (A) overall survival (OS) and (B) disease-specific survival (DSS) rates calculated by the Kaplan–Meier method according to neck management and nodal status (p < .05). pN, pathological nodal status; END, elective neck dissection; TND, therapeutic neck dissection. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]
