Norris, C M Cancer of the head and neck. Hypopharynx and larynx. Reasons for failure and management of recurrence. [electronic resource] - JAMA Jul 1972 - 81-3 p. digital Publication Type: Journal Article ISSN: 0098-7484 Subjects--Topical Terms: Diagnostic ErrorsFollow-Up StudiesHumansLaryngeal Neoplasms--therapyLaryngectomyLaryngoscopyLarynx--diagnostic imagingNeck DissectionNeoplasm Recurrence, Local--therapyPharyngeal Neoplasms--therapyPrecancerous Conditions--diagnosisRadiographyTime FactorsTrachea--diagnostic imaging