1. Dalhousie University, Dalhousie Medicine New Brunswick , Saint John, New Brunswick E2K 5E2 , Canada
2. Department of Emergency Medicine, Saint John Regional Hospital, Horizon Health Network , Saint John, New Brunswick E2L 4L2 , Canada
3. Research Services, Horizon Health Network , Saint John, New Brunswick E2L 4L2 , Canada
4. Trauma New Brunswick, Saint John Regional Hospital , Saint John, New Brunswick E2L 4L2 , Canada
5. Division of Occupational Medicine, Department of Medicine, University of Toronto , Toronto, Ontario M5S 1A1 , Canada