1. Division of Infectious Diseases, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
2. Division of Infectious Diseases, St. Michael’s Hospital, Toronto, Ontario, Canada
3. Division of Infectious Diseases, University of British Columbia, Vancouver, British Columbia, Canada
4. Divisions of General Internal Medicine and Infectious Diseases, Toronto General Hospital, Toronto, Ontario, Canada
5. Division of Infectious Diseases, The Ottawa Hospital, Ottawa, Ontario, Canada
6. Centre de Recherche du Centre Hospitalier de l’Université de Montréal, Montréal, Québec, Canada