title: L-dopa treatment in Parkinson's disease.
mesh_terms: D000284:Administration, Oral; D002986:Clinical Trials as Topic; D004295:Dihydroxyphenylalanine / Q000627:therapeutic use*; D006801:Humans; D010300:Parkinson Disease / Q000188:drug therapy*; D010919:Placebos
chemical_list: D010919:Placebos; D004295:Dihydroxyphenylalanine