Cramer, John D Impact of postoperative radiation therapy for deeply invasive oral cavity cancer upstaged to stage III. [electronic resource] - Head & neck 05 2019 - 1178-1183 p. digital Publication Type: Journal Article ISSN: 1097-0347 Standard No.: 10.1002/hed.25498 doi Subjects--Topical Terms: AgedCarcinoma, Squamous Cell--mortalityFemaleFollow-Up StudiesHumansMaleMiddle AgedMouth Neoplasms--mortalityNeoplasm InvasivenessNeoplasm StagingPostoperative PeriodProportional Hazards ModelsRadiotherapy, AdjuvantSurvival Analysis