1. Division of Infectious Disease, Department of Medical Microbiology, McGill University Health Center, Montreal, Quebec, Canada
2. Laboratoire de Santé Publique du Québec, Institut National de Santé Publique du Québec, Sainte-Anne-de-Bellevue, Québec, Canada
3. Department of Medical Microbiology, Hôpital du Haut Richelieu, Saint-Jean-sur-Richelieu, Québec, Canada
4. Department of Pediatrics, Children's and Women's Health Centre of British Columbia, Vancouver, British Columbia, Canada
5. Department of Pathology and Laboratory Medicine, Children's and Women's Health Centre of British Columbia, Vancouver, British Columbia, Canada
6. Special Bacteriology Section, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada