1. Division of Infectious Diseases, McMaster University, Hamilton, Ontario, Canada
2. Departments of Microbiology and Medicine, University of Toronto and Department of Microbiology, Mount Sinai Hospital and Princess Margaret Hospital, Toronto, Ontario, Canada
3. Department of Microbiology, Université Laval and Labratoire et service d’infectiologie, Centre Hospitalier de l’Université Laval, Québec, Canada
4. Internal Medicine and Medical Microbiology, University of Manitoba and Infection Control Unit, Health Sciences Centre, Winnipeg, Manitoba, Canada
5. University of British Columbia and Division of Infectious Diseases, University Hospital, Vancouver, British Columbia, Canada
6. Faculty of Pharmaceutical Sciences, University of British Columbia and Department of Pharmacy, Department of Medicine, Division of Infectious Diseases, Vancouver Hospital and Health Sciences Centre, Vancouver, British Columbia, Canada
7. Dalhousie University and Department of Medicine, Victoria General Hospital, Halifax, Nova Scotia, Canada