title: [Efficacy assessment with random assignment using data bases: medicine-based evidence?].
authors.affiliation: Departamento de Investigación Clínica, Lilly S.A. Madrid.
authors.forename: J A
authors.initials: JA
authors.lastname: Sacristán
authors.forename: J
authors.initials: J
authors.lastname: Soto
authors.forename: I
authors.initials: I
authors.lastname: Galende
mesh_terms: D016208:Databases, Factual; D019317:Evidence-Based Medicine; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*