An Economic Evaluation of Bupivacaine Plus Fentanyl Versus Ropivacaine Alone for Patient-Controlled Epidural Analgesia After Total-Knee Replacement Procedure: A Double-Blinded Randomized Study
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Regional Anesthesia & Pain Medicine Sep 2005, 30 (5) 446-451; DOI: 10.1016/j.rapm.2005.05.010