title: Comorbidities affect survival of patients with head, neck cancer.
mesh_terms: D000437:Alcoholism / Q000453:epidemiology; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D015897:Comorbidity; D048909:Diabetes Complications / Q000453:epidemiology; D006258:Head and Neck Neoplasms / Q000453:epidemiology / Q000401:mortality*; D006801:Humans; D008171:Lung Diseases / Q000453:epidemiology; D001523:Mental Disorders / Q000453:epidemiology; D009367:Neoplasm Staging; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology*; D011379:Prognosis; D020521:Stroke / Q000453:epidemiology; D015996:Survival Rate