6[4]Ng KF,Tsui SL,Yang JC,et al.Comparison of tramadol and tramadol/droperidol mixture for patient-controlled analgesia.Can J Anaesth,1997,44:810-815. 被引量：1
7[5]Pang WW,Mok MS,Lin CH,et al.Comparison of patient-controlled analgesia with tramadol or morphine.Can J Anaesth,1999,46:1090-1095. 被引量：1
8[6]Silvasti MP,Tarkkila M,Tuominen N,et al.Efficacy and side effects of tramadol versus oxycodone for patient-controlled analgesia after maxillofacial surgery.Eur J Anaesthesiol,1999,16:834-839. 被引量：1
9[7]Dayer P,Collart L,Desmeules J.The pharmacology of tramadol.Drugs,1994,47 (Suppl):3. 被引量：1
10[8]Lehmann KA. Tramadol in acute pain.Drugs,1997,53 (Suppl):25-33. 被引量：1
