Stram, Daniel O Re: Beta-carotene and lung cancer: a lesson for future chemoprevention investigations? [electronic resource] - Journal of the National Cancer Institute May 2003 - E4 p. digital Publication Type: Letter; Comment ISSN: 1460-2105 Standard No.: 10.1093/jnci/95.10.e4 doi Subjects--Topical Terms: Anticarcinogenic Agents--administration & dosageAntioxidants--administration & dosageBiomarkers--bloodChemoprevention--methodsConfounding Factors, EpidemiologicFalse Positive ReactionsFeeding BehaviorFollow-Up StudiesFruitHumansIncidenceLung Neoplasms--bloodProspective StudiesSmoking--adverse effectsVegetablesbeta Carotene--administration & dosage