[The placebo problem].
D003863:Depression / Q000188:drug therapy; D004345:Drug Industry; D049671:History, 18th Century; D006801:Humans; D010919:Placebos / Q000266:history; D011602:Psychophysiologic Disorders / Q000188:drug therapy; D013404:Suggestion
D010919:Placebos
Das Plazeboproblem.