Statistical evaluation of oral Beta-carotene.
D002338:Carotenoids / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D012107:Research Design / Q000592:standards; D013223:Statistics as Topic; D013473:Sunscreening Agents / Q000008:administration & dosage* / Q000627:therapeutic use; D013997:Time Factors
D013473:Sunscreening Agents; D002338:Carotenoids