1 Department of Clinical Neurosciences, Cumming School of Medicine, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, T2N 4N1, Canada. faizan.khan1@ucalgary.ca.
2 Public Health Agency of Canada, Ottawa, Canada. faizan.khan1@ucalgary.ca.
3 Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada.
4 Division of Critical Care, The Ottawa Hospital, Ottawa, Canada.
5 Division of Hematology, Ottawa Hospital, Ottawa, Canada.