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This case-control study evaluated fat food habitual intake in the context of the Brazilian diet as a risk factor for oral cancer. A food frequency questionnaire was applied to 70 patients with oral carcinoma and an equal number of controls treated in the same hospital for acute non-neoplastic conditions. Participants were paired for age, gender and smoking status, and matched by frequency for the...
Information on the etiology of oral and pharyngeal cancer in never smokers should help us to understand and quantify risk factors for the disease in the absence of the residual confounding and interaction by smoking. Out of a total of 528 cases with histologically confirmed incident cancers of the oral cavity and pharynx, 42 (10 men and 32 women) who described themselves as lifelong non-smokers were...
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