A randomized controlled trial of postoperative analgesia following total knee replacement: transdermal Fentanyl patches versus patient controlled analgesia (PCA)
1. Yeovil District Hospital, Higher Kingston, Yeovil, BA21 4AT, UK 2. Royal Cornwall Hospital, Truro, UK 3. Royal Devon & Exeter Hospital, Exeter, UK 4. Nelson Bay District Hospital, Nelson, New Zealand