title: Open pilot trial of ritanserin in parkinsonism.
mesh_terms: D000368:Aged; D000978:Antiparkinson Agents; D004409:Dyskinesia, Drug-Induced / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D007980:Levodopa / Q000037:antagonists & inhibitors; D010300:Parkinson Disease / Q000188:drug therapy*; D010865:Pilot Projects; D010880:Piperidines / Q000009:adverse effects / Q000627:therapeutic use*; D016713:Ritanserin
chemical_list: D000978:Antiparkinson Agents; D010880:Piperidines; D016713:Ritanserin; D007980:Levodopa