title: Levodopa in Parkinson's disease: effect on pulmonary function.
mesh_terms: D000367:Age Factors; D000368:Aged; D002986:Clinical Trials as Topic; D004295:Dihydroxyphenylalanine / Q000494:pharmacology / Q000627:therapeutic use*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications / Q000188:drug therapy*; D010919:Placebos; D011352:Procyclidine / Q000494:pharmacology / Q000627:therapeutic use; D011653:Pulmonary Diffusing Capacity / Q000187:drug effects; D012123:Pulmonary Ventilation / Q000187:drug effects; D012119:Respiration / Q000187:drug effects*; D012129:Respiratory Function Tests; D012737:Sex Factors; D012907:Smoking; D013147:Spirometry; D014797:Vital Capacity / Q000187:drug effects
chemical_list: D010919:Placebos; D004295:Dihydroxyphenylalanine; D011352:Procyclidine