[The clinical trial: the basic tool for research with human beings].
Pascual
J
J
Servicio de Nefrología, Hospital Ramón y Cajal, Madrid.
Hernández
D
D
de Pablo López de Abechuco
I
I
Gálvez Múgica
M A
MA
D035843:Biomedical Research / Q000379:methods*; D002986:Clinical Trials as Topic / Q000592:standards*; D006801:Humans