1. Department of Medicine, University of Toronto, Ontario, Canada
2. St Michael’s Hospital, University of Toronto, Ontario, Canada
3. Division of Infectious Diseases, William Osler Health System, Ontario, Canada
4. Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
5. Division of Medical Microbiology, Providence Health Care, Vancouver, Canada
6. Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada