1. Departments of Clinical Microbiology and Pathology, Saskatoon District Health and St. Paul’s Hospital (Grey Nuns’), Royal University Hospital and the University of Saskatchewan, Saskatoon, Saskatchewan, Canada and Anti-Infective R & D, Pfizer Pharmaceuticals (Canada), Kirkland, Quebec, Canada, Department of Microbiology, Royal University Hospital, 103 Hospital Drive, Saskatoon, Saskatchewan, Canada S7N 0W8, Tel: (306) 655 6943;, Fax: (306) 655 6947;, E-mail: blondeauj@sdh.sk.ca