title: Serum vitamin and provitamin A levels and the risk of cancer.
mesh_terms: D000328:Adult; D002338:Carotenoids / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology*; D011446:Prospective Studies; D012306:Risk; D014801:Vitamin A / Q000097:blood*; D014810:Vitamin E / Q000097:blood
chemical_list: D014801:Vitamin A; D014810:Vitamin E; D002338:Carotenoids