6Schmade K. Post herpetic neuralgia in immunocompetent elderlypeople [J]. Vaccine, 1998, 16:1768-1770.
7Chelardini C, Aleotti N, Bartolini A. Involvement of Serotonergicsystem in the analgesic effect of tricyclic antidepressants [J]. Euro-pean Neuro Psychopharmacology, 1995, 5: 283.
8Gray AM, Pache DM, Sewell RD. Doalpha 22 adrenoceptors play anintegral role in the anti nociceptive mechanism of action of antide-pressant compounds [J]. Eur J Pharmaco, 1999, 378: 161-168.
9McQuay HJ, Moore RA. Antidepressants and chronic pain [J].BMJpain, 1997,314: 763- 764.
10Harati Y, Gooch C, Swenson M, et al. Double bind randomized trialof tramadol for the treatment of the pain of diabetic neuropathy [J].Neurology, 1998, 50: 1 842-1 846.