1. Departments of Medicine, Medical Microbiology and Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
2. Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine, McGill University, Montréal, Québec, Canada
3. Division of Infectious Diseases, Department of Medicine, Queen’s University, Kingston, Ontario, Canada
4. Division of Infectious Diseases, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
5. Division of Infectious Diseases, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada