title: Single-patient randomized clinical trial. Opiates for intractable dyspnea.
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods*; D004311:Double-Blind Method; D004417:Dyspnea / Q000188:drug therapy* / Q000209:etiology; D005260:Female; D006801:Humans; D004091:Hydromorphone / Q000627:therapeutic use; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008875:Middle Aged; D009294:Narcotics / Q000627:therapeutic use*; D011897:Random Allocation; D012107:Research Design
chemical_list: D009294:Narcotics; D004091:Hydromorphone