1. Division of Neurology, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada
2. Department of Microbiology, Immunology, and Pathology, Prion Research Center, Colorado State University, Fort Collins, CO, USA
3. Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, NIH, Hamilton, MT, USA
4. Department of Pathology and Laboratory Medicine, University of Ottawa, Ottawa, Canada
5. Department of Obstetrics and Gynaecology, Faculty of Medicine & Dentistry, Edmonton, Canada
6. Centre for Prions & Protein Folding Diseases, University of Alberta, Edmonton, Canada