title: Upper airway obstruction complicating the Shy-Drager syndrome.
mesh_terms: D000328:Adult; D000402:Airway Obstruction / Q000188:drug therapy / Q000209:etiology*; D001342:Autonomic Nervous System Diseases / Q000150:complications*; D001545:Benserazide / Q000627:therapeutic use; D004311:Double-Blind Method; D006801:Humans; D007980:Levodopa / Q000627:therapeutic use; D008297:Male; D012791:Shy-Drager Syndrome / Q000150:complications*; D013990:Tidal Volume
chemical_list: D007980:Levodopa; D001545:Benserazide