1. Trauma Unit, School of Clinical Medicine, Charlotte Maxeke Johannesburg Academic Hospital, University of the Witwatersrand,
South Africa
2. Trauma Unit, Steve Biko Academic Hospital, Faculty of Health Sciences, University of Pretoria,
South Africa
3. Trauma Directorate, Department of Surgery, Chris Hani Baragwanath Academic Hospital, University of the Witwatersrand,
South Africa