4Biyani G, Mohammed S, Bhatia P. Fentanyl, rather than Tramadol : A cause of respiratory depression [J] . Indian J Anaesth, 2012, 56 (1): 89. 被引量:1
5Sanchez - Cardoso P, Higuera - Matas A, Martin S et al. Modulation of the endogenous opioid system after morphine self - administration and during its extinction: a study in Lewis and Fischer 344 rats [J]. Neuropharmacology, 2007, 52 (3) : 931. 被引量:1
9Shang H, Yang Y, Tong X, et al. Gum chewing slightly enhances early recovery from postoperative ileus after ce- sarean section: results of a prospective, randomized, con- trolled trial [J]. Am J Perinatol,2010,27(5) :387-391. 被引量:1
10Pang WW, Mok MS, Lin CH, et al. Comparison of patient-controlled analgesia (PCA) with tramadol or morphine [J]. Anaesth,1999, 46(11) :1030-1035. 被引量:1