FILE - In this Aug. 5, 2010, file photo, a pharmacy technician poses for a picture with hydrocodone and acetaminophen tablets, also known as Vicodin, at the Oklahoma Hospital Discount Pharmacy in Edmond, Okla. Opioids including Vicodin and fentanyl patches worked no better than Tylenol and other over-the-counter pills at relieving chronic back pain and hip and knee arthritis in a year-long study of mostly men at Minneapolis VA clinics. Both groups had slight improvement. (AP Photo/Sue Ogrocki, File)
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