title: Opiates and respiratory function in advanced cancer.
mesh_terms: D000328:Adult; D000368:Aged; D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D008875:Middle Aged; D009020:Morphine / Q000097:blood / Q000627:therapeutic use; D009294:Narcotics / Q000009:adverse effects* / Q000627:therapeutic use; D009369:Neoplasms / Q000503:physiopathology*; D010146:Pain / Q000188:drug therapy / Q000209:etiology; D012119:Respiration / Q000187:drug effects*; D013997:Time Factors
chemical_list: D009294:Narcotics; D002245:Carbon Dioxide; D009020:Morphine