Nutritional risk factors for esophageal cancer.
D000428:Alcohol Drinking / Q000009:adverse effects*; D016022:Case-Control Studies; D004032:Diet; D004938:Esophageal Neoplasms / Q000209:etiology*; D006801:Humans; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*; D014801:Vitamin A / Q000008:administration & dosage*
D014801:Vitamin A