title: Beta carotene fails to prevent cancer in two major studies; CARET intervention stopped.
authors.forename: K
authors.initials: K
authors.lastname: Smigel
mesh_terms: D001194:Asbestos; D002338:Carotenoids / Q000627:therapeutic use*; D005527:Food, Fortified; D006801:Humans; D008297:Male; D009369:Neoplasms / Q000517:prevention & control*; D012907:Smoking; D014801:Vitamin A / Q000627:therapeutic use; D019207:beta Carotene
chemical_list: D019207:beta Carotene; D014801:Vitamin A; D001194:Asbestos; D002338:Carotenoids