8Nation Y,Tanai S, Shingu K,et al. Response of plasma adrenocorti- cotropic hormone,cortisol and cytokines during and after upper abdominal surgery[J].Anesthesiology,1992,77(3):426-432.
9Groeben H,Schafer B, Pavlakovic G,et al. Lung function under h- ighsegmental thoracic epidural anesthesia with ropivacaine or bupiv- acaine in patients with severe obstructive pulmonary disease under- going breastsurgery[ J]. Anestheslology,2002,96 (5) :536 - 541.
10Fleisher LA,Anderson GF. Perioperative risk:how can we study the in-fluence of provider characteristics? [ J ]. Anesthesiology,2002, 96(2) :1039 - 1041.