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Tags: 2004, Analgesics, Backlog, Chronic Disease, Comparative Study, Double-Blind Method, Drug Evaluation, Drug Utilization Review, Edwards JE, Humans, Journal Article, Kalso E, McQuay HJ, Methadone, Moore RA, Non-U.S. Gov't, Opioid/adverse effects/therapeutic use, Pain, Pain Measurement, Pain/drug Therapy, Randomized Controlled Trials/methods, Research Support, Time Factors, Treatment Outcome
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