1. Department of Health Management, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada.
2. Microbiology Diagnostic Laboratory, Queen Elizabeth Hospital Charlottetown, 60 Riverside Drive, Charlottetown, PE C1A 8T5, Canada.
3. Department of Microbiology and Pathology, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada.