title: Re: Beta-carotene and lung cancer: a lesson for future chemoprevention investigations?
authors.forename: Daniel O
authors.initials: DO
authors.lastname: Stram
authors.forename: Anna H
authors.initials: AH
authors.lastname: Wu
mesh_terms: D016588:Anticarcinogenic Agents / Q000008:administration & dosage* / Q000097:blood*; D000975:Antioxidants / Q000008:administration & dosage; D015415:Biomarkers / Q000097:blood; D018890:Chemoprevention / Q000379:methods; D015986:Confounding Factors, Epidemiologic; D005189:False Positive Reactions; D005247:Feeding Behavior; D005500:Follow-Up Studies; D005638:Fruit; D006801:Humans; D015994:Incidence; D008175:Lung Neoplasms / Q000097:blood* / Q000209:etiology / Q000517:prevention & control*; D011446:Prospective Studies; D012907:Smoking / Q000009:adverse effects*; D014675:Vegetables; D019207:beta Carotene / Q000008:administration & dosage* / Q000097:blood*
chemical_list: D016588:Anticarcinogenic Agents; D000975:Antioxidants; D015415:Biomarkers; D019207:beta Carotene