title: Cancer of the oral cavity: observations on classification and natural history.
mesh_terms: D006801:Humans; D009055:Mouth / Q000033:anatomy & histology; D009060:Mouth Floor / Q000033:anatomy & histology; D009061:Mouth Mucosa / Q000033:anatomy & histology; D009062:Mouth Neoplasms / Q000145:classification* / Q000175:diagnosis / Q000473:pathology; D009960:Oropharynx / Q000033:anatomy & histology