Placebo effect in double-blind clinical trials: a review of interactions with medications.
Kleijnen
J
J
Department of Clinical Epidemiology and Biostatistics, University of Amsterdam, Netherlands.
de Craen
A J
AJ
van Everdingen
J
J
Krol
L
L
D004311:Double-Blind Method; D006801:Humans; D007258:Informed Consent; D015990:Placebo Effect; D016032:Randomized Controlled Trials as Topic