aEmergency Department, Lady Cilento Children's Hospital, South Brisbane
bEmergency Department, School of Medicine, University of Queensland, St Lucia
cEmergency Department, Logan Hospital, Meadowbrook, Queensland, Australia
dEmergency Department, Royal London Hospital, London, UK
eEmergency Department, Footscray Hospital, Melbourne, Victoria, Australia
Correspondence to Ben Lawton, BSc (Hons), MBChB, FRACP (PEM), Emergency Department, Logan Hospital, Armstrong Rd. & Loganlea Rd., Meadowbrook 4131, QLD, Australia. E-mail: [email protected]