1. Agriculture and Agri-Food Canada, 5403-1st Avenue South, Lethbridge, AB T1J 4B1, Canada.
2. National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, MB R3E 3M4, Canada.
3. Department of Laboratory Medicine, Chinook Regional Hospital, 960-19th Street South, Lethbridge, AB T1J 1W5, Canada.