What Concentration of Sufentanil Should be Combined with Ropivacaine 0.2% wt/vol for Postoperative Patient-Controlled Epidural Analgesia?
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H. Buerkle | M. Marcus | G. Brodner | H. Van Aken | T. Möllhoff | N. Mertes | M. Zahl | S. Wirtz | Matthias Zahl