1. Palmerston North Hospital, Department of Emergency Medicine, Roslyn, Palmerston North, New Zealand
2. Palmerston North Hospital, Department of Emergency Medicine, Roslyn, Palmerston North, New Zealand; University of Otago, Department of Surgery and Anesthesia, Dunedin, New Zealand
3. Palmerston North Hospital, Department of Emergency Medicine, Roslyn, Palmerston North, New Zealand; Ohio University Heritage College of Osteopathic Medicine, Department of Emergency Medicine, Athens, Ohio