1Kehler H. Multimodal approach to control postoperative pathophysiology and rehabilitation. Br J Anaesth, 1997,78(Suppl) :606.
2Wiesel S,Grillas R. Patient-controlled analgesia after laparoscopic and open cholecyslectomy. Can I Anaesth, 1995,42:37~39.
3Dawson PJ,Libreri FC,Jones DJ ,et al. The efficacy of adding a con tinuous intravenous morphine infusion to patient-controlled analge sia(PCA) in abdominal surgery. Anaesth Intensive Care, 1995,23:453~455.