title: Are placebo-controlled clinical trials ethical or needed when alternative treatment exists?
authors.forename: R
authors.initials: R
authors.lastname: Simon
mesh_terms: D018849:Controlled Clinical Trials as Topic / Q000379:methods* / Q000592:standards*; D004992:Ethics, Medical; D032984:Ethics, Research; D006381:Helsinki Declaration; D006801:Humans; D010919:Placebos
chemical_list: D010919:Placebos