1. Centre for Prions & Protein Folding Disease, University of Alberta, Edmonton, Canada
2. Department of Medical Genetics, University of Alberta, Edmonton, Canada
3. Majmaah University, Majmaah, Saudi Arabia
4. Department of Biological Sciences, University of Alberta, Edmonton, Canada
5. Department of Biochemistry, University of Alberta, Edmonton, Canada
6. Department of Neurology, University of Pittsburgh, Pittsburgh, United States
7. Geriatric Research, Education and Clinical Center, Pittsburgh VA Healthcare System, Pittsburgh, United States