title: Validity of dietary assessment.
authors.forename: B
authors.initials: B
authors.lastname: Watzl
authors.forename: G
authors.initials: G
authors.lastname: Rechkemmer
mesh_terms: D002338:Carotenoids / Q000008:administration & dosage*; D015331:Cohort Studies; D005638:Fruit; D006801:Humans; D000077276:Lycopene; D009369:Neoplasms / Q000453:epidemiology; D015596:Nutrition Assessment; D015203:Reproducibility of Results; D012907:Smoking; D014675:Vegetables
chemical_list: D002338:Carotenoids; D000077276:Lycopene