Early detection of head and neck cancer.
D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D007972:Leukoplakia, Oral / Q000175:diagnosis / Q000473:pathology; D009062:Mouth Neoplasms / Q000175:diagnosis / Q000473:pathology; D010808:Physical Examination; D012017:Referral and Consultation; D012307:Risk Factors