RT Journal Article SR Electronic T1 Review: tricyclic antidepressants, capsaicin, gabapentin, and oxycodone are effective for postherpetic neuralgia JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 147 OP 147 DO 10.1136/ebm.7.5.147 VO 7 IS 5 YR 2002 UL http://ebm.bmj.com/content/7/5/147.abstract AB