Randomized Controlled Trial
Comparison of intravenous ketorolac and meperidine in the treatment of biliary colic.
J Emerg Med. 2002 Oct 1; 23 (3): 237-41.
Randomized Controlled Trial
A double-blind randomized clinical trial evaluating the analgesic efficacy of ketorolac versus butorphanol for patients with suspected biliary colic in the emergency department.
Acad Emerg Med. 2008 Aug 1;15(8):718-22.
Randomized Controlled Trial
Epidural-morphine-induced pruritus: propofol versus naloxone.
Anesth. Analg. 1994 Jun 1;78(6):1110-3.