The Safety and Efficacy of Fentanyl Iontophoretic Transdermal System Compared with Morphine Intravenous Patient-Controlled Analgesia for Postoperative Pain Management: An Analysis of Pooled Data from Three Randomized, Active-Controlled Clinical StudiesEugene R. Viscusi, Paul Kershaw, Matthew Siccardi et al.|Anesthesia & Analgesia|2007Cited by 59