By Peter Cameron, Professor of Emergency Medicine, The Alfred Hospital, Prahran, and Monash University, Clayton, Victoria, Australia; George Jelinek, Professor and Chairman of Emergency Medicine, Sir Charles Gairdner Hospital and University of Western Australia, Hospital Avenue, Nedlands, Western Australia; Ian Everitt, Emergency Paediatrician, Princess Margaret Hospital for Children, Subiaco; Joondalup Health Campus, Joondalup, Western Australia, Australia; Gary J. Browne, MBBS, FRAQCP, FACEM, Associate Professor of Paediatric Emergency Medicine, The University of Sydney, The Children's Hospital at Westmead Clinical School, Children's Hospital Institute of Sports Medicine and Department of Emergency Medicine, Visiting Fellow in Sports Medicine & Associate Professor, The University of New South Wales, Head of Academic Emergency Medicine, The Children's Hospital at Westmead, New South Wales, Australia; and Jeremy Raftos, MD, Director, Paediatric Emergency, Women's and Children's Hospital, Children, Youth and Women's Health Service, North Adelaide, South Australia |