Justin Hall1,2, Reza Mirza2,3, Pavandeep Gill2,4. 1. Division of Emergency Medicine, Department of Medicine, University of Toronto, Ontario, Canada. 2. Resident Doctors of Canada, Ontario, Canada. 3. Division of Internal Medicine, Department of Medicine, McMaster University, Ontario, Canada. 4. Department of Pathology & Laboratory Medicine, University of Calgary, Alberta, Canada.