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Patient controlled analgesia was more effective than nurse controlled analgesia after cardiac surgery

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  • Source of funding: no external funding.

  • For correspondence: Dr R Gust, DEAA, Department of Anesthesiology, University of Heidelberg School of Medicine, Im Neuenheimer Feld 110, D-69120 Heidelberg, Germany. Fax +49 6221 56 5345.