title: Carcinoma of the oral cavity and oropharynx in Karachi (Pakistan). An appraisal.
mesh_terms: D000293:Adolescent; D000328:Adult; D001114:Areca; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000532:radiotherapy; D010154:Pakistan; D010610:Pharyngeal Neoplasms / Q000453:epidemiology* / Q000532:radiotherapy; D010946:Plants, Medicinal; D010947:Plants, Toxic; D012907:Smoking / Q000453:epidemiology; D014030:Tobacco, Smokeless; D014801:Vitamin A / Q000097:blood
chemical_list: D014801:Vitamin A