1. Department of Medical Imaging, Sunnybrook Health Science Centre, University of Toronto, Toronto, ON M4N 3M5, Canada
2. Tory Trauma Program, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada
3. Department of Anesthesia, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada
4. Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada
5. Department of Medicine (Emergency Medicine), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada
6. Tory Trauma Program, Department of Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada