Iontophoretic transdermal system using fentanyl compared with patient-controlled intravenous analgesia using morphine for postoperative pain management.
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Grond S, Hall J, Spacek A, Hoppenbrouwers M, Richarz U, Bonnet F
Br J Anaesth. 2007 Jun; 98(6):806-15
PMID: 17519263