1. British Columbia Centre for Disease Control, and
2. University of British Columbia, Vancouver;
3. Institut National de Santé Publique du Québec,
4. Laval University, and
5. Centre Hospitalier Universitaire de Québec, Québec City;
6. Public Health Ontario, Toronto;
7. University of Calgary, Alberta;
8. University of Toronto, Ontario;
9. Alberta Provincial Laboratory, Calgary,
10. Alberta Provincial Laboratory, Edmonton
11. University of Alberta, Edmonton; and
12. National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada