Review
Transcutaneous electrical nerve stimulation after thoracic surgery: systematic review and meta-analysis of 11 randomized trials.
Rev Bras Cir Cardiovasc. 2012 Jan 1;27(1):75-87.
Randomized Controlled Trial
The efficacy of preoperative versus postoperative rofecoxib for preventing acute postoperative dental pain: a prospective randomized crossover study using bilateral symmetrical oral surgery.
Clin J Pain. 2005 Nov 1; 21 (6): 536-42.
Randomized Controlled Trial
Prospective randomized clinical trial comparing patient-controlled intravenous analgesia with patient-controlled epidural analgesia after lumbar spinal fusion.
Spine. 2003 Apr 15;28(8):739-43.