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Review: opioids are more effective than placebo but not other analgesics for chronic noncancer pain.
Carey T, Krebs E. Review: opioids are more effective than placebo but not other analgesics for chronic noncancer pain. ACP journal club. 2006 Jan 1; 145(3):74.
Dimensions for VA is a web-based tool available to VA staff that enables detailed searches of published research and research projects.