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Sustained safety and efficacy of once-daily hydromorphone extended-release (OROS® hydromorphone ER) compared with twice-daily oxycodone controlled-release over 52 weeks in patients with moderate to severe chronic noncancer pain.
Richarz U, Waechter S, Sabatowski R, Szczepanski L, Binsfeld H. Richarz U, et al. Among authors: binsfeld h. Pain Pract. 2013 Jan;13(1):30-40. doi: 10.1111/j.1533-2500.2012.00553.x. Epub 2012 Apr 18. Pain Pract. 2013. PMID: 22510252 Clinical Trial.