title: Letter: Levodopa and chronic bronchitis.
mesh_terms: D001986:Bronchial Spasm / Q000150:complications; D001991:Bronchitis / Q000150:complications / Q000188:drug therapy*; D001993:Bronchodilator Agents; D004295:Dihydroxyphenylalanine / Q000378:metabolism / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications / Q000188:drug therapy
chemical_list: D001993:Bronchodilator Agents; D004295:Dihydroxyphenylalanine