title: Placebo surgery in trials of therapy for Parkinson's disease.
authors.forename: C R
authors.initials: CR
authors.lastname: Freed
authors.forename: R E
authors.initials: RE
authors.lastname: Breeze
authors.forename: S
authors.initials: S
authors.lastname: Fahn
mesh_terms: D004311:Double-Blind Method; D004992:Ethics, Medical; D016332:Fetal Tissue Transplantation; D006801:Humans; D010300:Parkinson Disease / Q000601:surgery*; D010919:Placebos; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012306:Risk
chemical_list: D010919:Placebos