title: [Problems in methods of evaluation of parkinsonian symptoms in a therapeutic trial].
mesh_terms: D004295:Dihydroxyphenylalanine / Q000627:therapeutic use*; D006801:Humans; D010300:Parkinson Disease / Q000188:drug therapy*; D010919:Placebos / Q000627:therapeutic use*
chemical_list: D010919:Placebos; D004295:Dihydroxyphenylalanine
vernacular_title: Problemi metodologici di valutazione della sintomatologia parkinsoniana nel corso della sperimentazione terapeutica.