Comparison between bupivacaine instillation versus ilioinguinal/iliohypogastric nerve block for postoperative analgesia following inguinal herniorrhaphy in children. - Casey,W.F.; Rice,L.J.; Hannallach,R.S.; Broadman,L.; Norden,J.M.; Guzzetta,P.A. (Anesthesiology, 1990)