title: Dietary carotene and the risk of lung cancer.
mesh_terms: D000328:Adult; D002338:Carotenoids / Q000627:therapeutic use*; D004032:Diet; D006801:Humans; D008175:Lung Neoplasms / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D012306:Risk
chemical_list: D002338:Carotenoids