Dula, D J A prospective study comparing i.m. ketorolac with i.m. meperidine in the treatment of acute biliary colic. [electronic resource] - The Journal of emergency medicine Feb 2001 - 121-4 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0736-4679 Standard No.: 10.1016/s0736-4679(00)00311-5 doi Subjects--Topical Terms: AdolescentAdultAgedAnalgesics, Opioid--therapeutic useAnti-Inflammatory Agents, Non-Steroidal--therapeutic useBiliary Tract Diseases--drug therapyColic--drug therapyDouble-Blind MethodDrug Therapy, CombinationFemaleHumansInjections, IntramuscularKetorolac--therapeutic useMaleMeperidine--therapeutic useMiddle AgedProspective Studies