1. Department of Pathobiology and Laboratory Medicine, University of Toronto , Toronto, Ontario M5S 1A8 , Canada
2. Ontario Forensic Pathology Service , Toronto, Ontario M3M 0B1 , Canada
3. Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto , Toronto, Ontario M5G 2C4 , Canada
4. Department of Pathology, College of Health Sciences, Makerere University , Kampala PO 7072, East Africa
5. Department of Pathology and Laboratory Medicine, University of British Columbia , Vancouver, British Columbia V6T 1Z7 , Canada
6. Laboratory Medicine Program and Krembil Brain Institute, University Health Network , Toronto, Ontario M5G 2C4 , Canada
7. Department of Pathology, Faculty of Medicine, Gulu University , Gulu, Uganda PO 166, East Africa
8. Department of Surgery, Faculty of Medicine, Gulu University , Gulu, Uganda PO 166, East Africa