[Why is it essential to randomize a clinical trial on therapy?].
Peñaloza
Blanca
B
Unidad de Medicina Basada en Evidencia y Departamento de Medicina Familiar, Pontificia Universidad Católica de Chile. bpenalo@med.puc.cl
Candia
Roberto
R
D002986:Clinical Trials as Topic; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design; D013812:Therapeutics