title: [Vitamin A and lung cancer. Should smokers eat large quantities of vegetables?].
mesh_terms: D000328:Adult; D003718:Denmark; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology / Q000517:prevention & control*; D008297:Male; D012306:Risk; D012907:Smoking; D014675:Vegetables; D014801:Vitamin A / Q000008:administration & dosage*
chemical_list: D014801:Vitamin A
vernacular_title: A vitamin og lungecancer. Bør rygere spise mange grønsager?