title: What is the risk of sham surgery in Parkinson disease clinical trials? A review of published reports.
authors.forename: William
authors.initials: W
authors.lastname: Landau
mesh_terms: D016380:Brain Tissue Transplantation / Q000009:adverse effects; D004311:Double-Blind Method; D006801:Humans; D019635:Neurosurgical Procedures / Q000009:adverse effects*; D010300:Parkinson Disease / Q000601:surgery*; D015990:Placebo Effect; D010919:Placebos / Q000009:adverse effects*; D016032:Randomized Controlled Trials as Topic / Q000941:ethics / Q000706:statistics & numerical data; D018570:Risk Assessment / Q000379:methods* / Q000592:standards; D033581:Stem Cell Transplantation / Q000009:adverse effects; D016896:Treatment Outcome
chemical_list: D010919:Placebos