1. Bacteriology and Enteric Diseases Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
2. University of Saskatchewan, Saskatoon, Saskatchewan, Canada
3. Public Health Ontario Laboratories, Toronto, Ontario, Canada
4. Laboratoire de Santé Publique du Québec, Ste-Anne-de-Bellevue, Québec, Canada
5. British Columbia Public Health Microbiology and Reference Laboratory, Vancouver, British Columbia, Canada
6. Provincial Laboratory for Public Health, Edmonton, Alberta, Canada
7. Cadham Provincial Laboratory, Winnipeg, Manitoba, Canada
8. Saskatchewan Disease Control Laboratory, Regina, Saskatchewan, Canada