title: Epidemiologic problems related to misclassification of outcomes.
authors.forename: G
authors.initials: G
authors.lastname: Wingren
mesh_terms: D016022:Case-Control Studies; D006801:Humans; D009369:Neoplasms / Q000453:epidemiology / Q000473:pathology; D012042:Registries; D013548:Sweden / Q000453:epidemiology; D013964:Thyroid Neoplasms / Q000453:epidemiology* / Q000473:pathology*