By Pamela Macintyre, BMedSc, MBBS, MHA, FANZCA, FFPMANZCA, Director, Acute Pain Service, Department of Anesthesia, Hyperbaric Medicine and Pain Medicine, Royal Adelaide Hospital and University of Adelaide, Adelaide, Australia; and Stephan A. Schug, MD, FANZCA, FFPMANZCA, Chair of Anaesthesiology, Pharmacology and Anaesthesiology Unit, School of Medicine and Pharmacology, University of Western Australia; Director of Pain Medicine, Royal Perth Hospital, Perth, Australia |