1. Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB T6G 2M8, Canada
2. Department of Biochemistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
3. Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada
4. Centro de Encefalopatías y Enfermedades Transmisibles Emergentes, Departamento de Anatomía e Histología Humana, Universidad de Zaragoza, IA2, IIS Aragón, 50013 Zaragoza, Spain
5. Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB T6G 1C9, Canada
6. Department of Medicine, University of Alberta, Edmonton, AB T6G 2G3, Canada
7. Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2E1, Canada
8. Department of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 1C9, Canada