1 Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada; Clinical section of Microbiology, Calgary Laboratory Services, Calgary, Alberta, Canada.
3 Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada; Clinical section of Microbiology, Calgary Laboratory Services, Calgary, Alberta, Canada; Department of Medical Microbiology, University of Pretoria, Pretoria, South Africa.