title: A comparison of the analgesic effects of profadol and morphine in patients with cancer.
mesh_terms: D000328:Adult; D000368:Aged; D000700:Analgesics / Q000009:adverse effects / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000009:adverse effects / Q000627:therapeutic use*; D009369:Neoplasms; D010146:Pain / Q000188:drug therapy*; D011759:Pyrrolidines / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D000700:Analgesics; D011759:Pyrrolidines; D009020:Morphine