title: [Methodology and case-control studies. Apropos of the OFRA study].
authors.forename: F
authors.initials: F
authors.lastname: Bermejo
mesh_terms: D002545:Brain Ischemia / Q000453:epidemiology* / Q000209:etiology; D016022:Case-Control Studies; D048909:Diabetes Complications; D006801:Humans; D012307:Risk Factors
vernacular_title: La metodología y los estudios caso-control. A propósito del estudio OFRA.