1. Division of Infectious Diseases, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
2. Grey Nuns Community Hospital, Edmonton, Alberta, Canada
3. Alberta Ministry of Health, Edmonton, Alberta, Canada
4. School of Public Health, University of Alberta, Edmonton, Alberta, Canada
5. Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
6. Provincial Laboratory for Public Health, Edmonton, Alberta, Canada
7. Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada