title: The effect of equi-analgesic doses of fentanyl, morphine, meperidine and pentazocine on common bile duct pressure.
mesh_terms: D000328:Adult; D000368:Aged; D000701:Analgesics, Opioid / Q000627:therapeutic use*; D002763:Cholecystectomy; D003135:Common Bile Duct / Q000187:drug effects*; D005260:Female; D005283:Fentanyl / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008614:Meperidine / Q000627:therapeutic use; D008875:Middle Aged; D009020:Morphine / Q000627:therapeutic use; D010423:Pentazocine / Q000627:therapeutic use; D011312:Pressure
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine; D008614:Meperidine; D010423:Pentazocine; D005283:Fentanyl