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