Cepeda, M S Comparative analgesic efficacy of patient-controlled analgesia with ketorolac versus morphine after elective intraabdominal operations. [electronic resource] - Anesthesia and analgesia Jun 1995 - 1150-3 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0003-2999 Standard No.: 10.1097/00000539-199506000-00014 doi Subjects--Topical Terms: Abdomen--surgeryAdultAnalgesia, Patient-Controlled--adverse effectsAnalgesics, Non-Narcotic--administration & dosageDouble-Blind MethodElective Surgical ProceduresFemaleHumansKetorolacMaleMorphine--administration & dosagePain MeasurementPain, Postoperative--drug therapyTolmetin--administration & dosage