Sher, David J Efficacy and toxicity of reirradiation using intensity-modulated radiotherapy for recurrent or second primary head and neck cancer. [electronic resource] - Cancer Oct 2010 - 4761-8 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 0008-543X Standard No.: 10.1002/cncr.25305 doi Subjects--Topical Terms: Carcinoma, Squamous Cell--mortalityCombined Modality TherapyFemaleHead and Neck Neoplasms--mortalityHumansMaleMiddle AgedNeoplasm Recurrence, Local--radiotherapyNeoplasms, Second Primary--mortalityRadiotherapy, Intensity-Modulated--adverse effectsRetreatmentRetrospective StudiesSurvival Analysis